refactor: migra los campos de formulario y sliders a Signal Forms

libs/ui/README.md

@@ -17,18 +17,82 @@ Construir: `nx build ui` · Lint: `nx lint ui`
 ## Qué se hizo
 
 |              |                                                                                                                                                                             |
-|---|---|
+| ------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | Prefijo      | `Dl`→`Pi`, `dl-`→`pi-` (selectores, clases CSS, nombres de fichero), `@deale-workspace/…`→rutas relativas                                                                   |
 | NgModules    | 41 → 4 (sólo quedan los que aportan providers: `icon-registry`, `loaders`, `router-store`, `scroll-to`)                                                                     |
 | Componentes  | 70, **todos** con `ChangeDetectionStrategy.OnPush`                                                                                                                          |
 | Decoradores  | 0 restantes: 460 `input()`, 6 `model()`, 20 `output()`, 8 `viewChild()`, 2 `viewChildren()`, 17 `contentChild()`, 6 `contentChildren()`                                     |
 | Control flow | `*ngIf`/`*ngFor`/`*ngSwitch` → `@if`/`@for`/`@switch` (110 `@if`, 26 `@for`, 3 `@switch`). Ya no se importa ninguna directiva de `CommonModule`                             |
+| Formularios  | Los 13 campos de `ui/form-field` y los 2 de `ui/slider` pasan de `ControlValueAccessor` + `formControlName` a **Signal Forms** (`FormValueControl` / `FormCheckboxControl`) |
 
 Se usaron las migraciones oficiales de Angular (`@angular/core:standalone`,
 `signal-input-migration`, `output-migration`, `signal-queries-migration`,
 `control-flow-migration`, `cleanup-unused-imports`) y se resolvió a mano lo que
 no cubren.
 
+## Formularios: Signal Forms
+
+Los campos ya no son `ControlValueAccessor` ni reciben `formControlName`.
+Implementan los contratos de Signal Forms, así que basta con enlazar `[field]`:
+
+```ts
+import { form, required, min, FormField } from '@angular/forms/signals';
+
+@Component({
+  imports: [FormField, PiTextFieldComponent, PiNumberFieldComponent, PiSlideToggleComponent],
+  template: `
+    <pi-text-field [field]="f.name" placeholder="Nombre" />
+    <pi-number-field [field]="f.age" />
+    <pi-slide-toggle [field]="f.active" />
+  `,
+})
+export class Ejemplo {
+  private readonly model = signal({ name: '', age: null, active: false });
+
+  protected readonly f = form(this.model, (m) => {
+    required(m.name);
+    min(m.age, 18);
+  });
+}
+```
+
+La directiva `FormField` sincroniza sola `value`, `disabled`, `errors`,
+`touched`, `required`, `min`/`max`, `maxLength`… con el campo enlazado.
+
+| Componente                                           | Contrato              | Tipo del valor                        |
+| ---------------------------------------------------- | --------------------- | ------------------------------------- |
+| text, email, password, phone, icon, search, textarea | `FormValueControl`    | `string`                              |
+| number, currency, incremental-number                 | `FormValueControl`    | `number \| null`                      |
+| slide-toggle                                         | `FormCheckboxControl` | `boolean` (usa `checked`, no `value`) |
+| incremental-range, range-slider                      | `FormValueControl`    | `PiRange` (`{from, to}`)              |
+| slider                                               | `FormValueControl`    | `number`                              |
+
+Detalles a tener en cuenta:
+
+- **`formControlName` y `formGroupName` desaparecen.** `incremental-range-field`
+  y `range-slider` ya no leen un `FormGroup` anidado: reciben el rango completo
+  por `value` (tipo `PiRange`, exportado por la librería).
+- **`isDisabled` → `disabled`**, que es el nombre del contrato y ahora es una
+  señal (`disabled()`).
+- **Los mensajes de error** venían de `control.errors['message']` (un array de
+  claves i18n). Ahora se leen del input `errors`, usando `error.message` y
+  cayendo a `error.kind` si no lo hay. La clase base expone `errorMessages()`.
+- **Los campos numéricos usan `transformedValue`**, el mecanismo de Signal Forms
+  para parsear texto→número reportando errores de parseo al campo.
+- **`ngx-currency` se ha eliminado de `currency-field`.** Su directiva
+  `currencyMask` es un ControlValueAccessor y no funciona sin reactive forms.
+  El formateo (decimal `,`, miles `.`, 2 decimales) se replica con
+  `transformedValue` + `toLocaleString('es-ES')`. **Se pierde el enmascarado en
+  vivo mientras se escribe**: ahora se formatea al salir del campo.
+- **`slide-toggle` ya no extiende `PiBaseFormFieldComponent`**: el contrato de
+  casilla exige `checked` y prohíbe declarar `value`. También desaparece el
+  campo `isChecked` que se sincronizaba por suscripción.
+- **`touch`**: los controles emiten esta salida en el `blur` para que el campo
+  se marque como tocado.
+
+Los selects (`ui/select`) siguen con `ControlValueAccessor`; quedaron fuera del
+alcance de esta migración.
+
 ## Decisiones que cambian comportamiento
 
 Revisar estos puntos antes de usar la librería en producción:
@@ -57,7 +121,7 @@ durante la detección de cambios, no de forma síncrona en la asignación:
 **3. `PiAccordionComponent.expandedItemIndex` pasa a `model()`.**
 Tenía un two-way binding hecho a mano (`expandedItemIndex` + `expandedItemIndexChange`).
 `model()` genera el evento automáticamente. **Ojo:** el código original emitía el
-valor *anterior* al plegar/desplegar (`emit(expandedItemIndex)` antes de reasignar);
+valor _anterior_ al plegar/desplegar (`emit(expandedItemIndex)` antes de reasignar);
 `model()` emite el nuevo. Parece que el original tenía un bug. Su tipo pasa a
 `number | null` porque `toggleState` asigna `null` al colapsar.
 
@@ -98,7 +162,7 @@ El origen tiene símbolos duplicados. En `index.ts` gana el primero y el otro se
 omite (queda anotado en el fichero). Siguen siendo accesibles por ruta directa:
 
 | Símbolo                                         | Se exporta desde      | Se omite de         |
-|---|---|---|
+| ----------------------------------------------- | --------------------- | ------------------- |
 | `PiSlideToggleComponent`                        | `ui/form-field`       | `ui/slide-toggle`   |
 | `PiDisabledDirective`                           | `util/status`         | `ui/text`           |
 | `featureKey`, `getFeatureState`, `initialState` | `util/device-configs` | `util/list-configs` |

libs/ui/src/lib/ui/form-field/base-form-field.component.ts

@@ -1,28 +1,30 @@
 import {
+  ChangeDetectionStrategy,
   Component,
   HostBinding,
-  Injector,
-  effect,
+  computed,
   input,
+  model,
   output,
-  ChangeDetectionStrategy,
+  signal,
 } from '@angular/core';
-import { FormControl, NG_VALUE_ACCESSOR } from '@angular/forms';
+import { FormValueControl, ValidationError } from '@angular/forms/signals';
 import { ComponentFamilyClass } from '../../styles';
-import { PiFormControl } from '../../util/form-control';
 
+/**
+ * Base de los campos de formulario. Implementa el contrato `FormValueControl`
+ * de Signal Forms: basta con enlazar `[field]` en el consumidor y la directiva
+ * `FormField` sincroniza `value` y el resto de entradas de estado.
+ *
+ * Sustituye al antiguo `ControlValueAccessor` + `formControlName`.
+ */
 @Component({
   changeDetection: ChangeDetectionStrategy.OnPush,
   template: '',
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiBaseFormFieldComponent,
-      multi: true,
-    },
-  ],
 })
-export abstract class PiBaseFormFieldComponent extends PiFormControl {
+export abstract class PiBaseFormFieldComponent<
+  TValue = string,
+> implements FormValueControl<TValue> {
   @HostBinding('class')
   get classes(): string {
     return [
@@ -33,62 +35,63 @@ export abstract class PiBaseFormFieldComponent extends PiFormControl {
     ].join(' ');
   }
 
-  readonly formControlName = input.required<string>();
+  /* --- Contrato FormValueControl --------------------------------------- */
+
+  /** Único miembro obligatorio del contrato: lo enlaza la directiva `FormField`. */
+  readonly value = model.required<TValue>();
+
+  readonly errors = input<readonly ValidationError.WithOptionalFieldTree[]>([]);
+  readonly disabled = input(false);
+  readonly invalid = input(false);
+  readonly touched = input(false);
+  readonly required = input(false);
+  readonly name = input('');
+
+  /** Marca el campo como tocado; se emite en el blur del control nativo. */
+  readonly touch = output<void>();
+
+  /* --- Entradas propias de presentación -------------------------------- */
 
   readonly placeholder = input<string>();
-
   readonly isAutofocus = input(false);
-
   readonly appearance = input<'outline' | 'fill'>('outline');
-
   readonly enableErrorMessage = input(true);
 
-  readonly isControlStatusReactive = input(false);
-
-  /**
-   * El estado deshabilitado tiene dos fuentes: esta entrada y el
-   * `setDisabledState` del ControlValueAccessor. `disabled` (heredado de
-   * PiFormControl) sigue siendo el estado efectivo que se debe leer.
-   */
-  readonly isDisabled = input(false);
-
   readonly isActive = output<boolean>();
 
-  constructor(injector: Injector) {
-    super(injector);
+  /* --- Estado interno --------------------------------------------------- */
 
-    effect(() => {
-      this.disabled = this.isDisabled();
-      // Update control status reactively
-      if (this.isControlStatusReactive()) {
-        if (this.disabled) {
-          this.control.disable();
-        } else {
-          this.control.enable();
-        }
-      }
-    });
-  }
+  protected readonly focused = signal(false);
 
-  get control(): FormControl {
-    return this.controlContainer.control?.get(
-      this.formControlName(),
-    ) as FormControl;
-  }
+  /**
+   * Mensajes listos para pasar por el pipe `translate`. Antes venían de
+   * `control.errors['message']`; ahora cada `ValidationError` trae su `message`
+   * (y si no, se usa el `kind` como clave).
+   */
+  protected readonly errorMessages = computed(() =>
+    this.errors().map((error) => error.message ?? error.kind),
+  );
 
-  get hasError(): boolean {
-    return !!this.control.errors?.['message'];
-  }
+  protected readonly hasError = computed(() => this.errors().length > 0);
 
   protected get focusedClass(): string | boolean {
-    return this.focused ? 'is-focused' : false;
+    return this.focused() ? 'is-focused' : false;
   }
 
   protected get hasErrorClass(): string | boolean {
-    return this.hasError ? 'has-error' : '';
+    return this.hasError() ? 'has-error' : '';
   }
 
   protected get isDisabledClass(): string {
-    return this.disabled ? 'is-disabled' : '';
+    return this.disabled() ? 'is-disabled' : '';
+  }
+
+  onFocus(): void {
+    this.focused.set(true);
+  }
+
+  onBlur(): void {
+    this.focused.set(false);
+    this.touch.emit();
   }
 }

libs/ui/src/lib/ui/form-field/currency-field/currency-field.component.html

@@ -9,22 +9,22 @@
     <ng-content select="pi-suffix"></ng-content>
   </ng-container>
 
-  @if (control) {
   <input
-      [formControl]="control"
+    [value]="rawValue()"
+    (input)="rawValue.set($any($event.target).value)"
+    (focus)="onFocus()"
+    (blur)="onBlur()"
     [placeholder]="placeholder()!"
     matInput
+    inputmode="decimal"
     pi-autofocus
     [isAutofocusSelected]="isAutofocus()"
-      currencyMask
-      [options]="customCurrencyMaskConfig"
   />
-  }
 
-  @if (enableErrorMessage() && control.errors) {
+  @if (enableErrorMessage() && hasError()) {
     <mat-error>
-      @for (text of control.errors['message']; track text) {
-        {{ text | translate }}
+      @for (message of errorMessages(); track message) {
+        {{ message | translate }}
       }
     </mat-error>
   }

libs/ui/src/lib/ui/form-field/currency-field/currency-field.component.ts

@@ -1,12 +1,5 @@
-import {
-  ChangeDetectionStrategy,
-  Component,
-  HostBinding,
-  forwardRef,
-} from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
-
-import { NgxCurrencyInputMode, NgxCurrencyDirective } from 'ngx-currency';
+import { ChangeDetectionStrategy, Component, HostBinding } from '@angular/core';
+import { transformedValue } from '@angular/forms/signals';
 
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import {
@@ -21,41 +14,57 @@ import { PiAutofocusDirective } from '../directives/autofocus.directive';
 
 import { TranslatePipe } from '@ngx-translate/core';
 
+const DECIMAL_SEPARATOR = ',';
+const THOUSANDS_SEPARATOR = '.';
+const PRECISION = 2;
+
 @Component({
   selector: 'pi-currency-field',
   templateUrl: './currency-field.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiCurrencyFieldComponent,
-      multi: true,
-    },
-  ],
   imports: [
     MatFormField,
     MatLabel,
     MatSuffix,
     MatInput,
-    NgxCurrencyDirective,
-    ReactiveFormsModule,
     PiAutofocusDirective,
     MatError,
-    forwardRef(() => PiCurrencyFieldComponent),
     TranslatePipe,
   ],
 })
-export class PiCurrencyFieldComponent extends PiBaseFormFieldComponent {
+export class PiCurrencyFieldComponent extends PiBaseFormFieldComponent<
+  number | null
+> {
   @HostBinding('class') className = `pi-form-field__currency`;
 
-  customCurrencyMaskConfig = {
-    align: 'left',
-    allowNegative: true,
-    decimal: ',',
-    precision: 2,
-    prefix: '',
-    thousands: '.',
-    inputMode: NgxCurrencyInputMode.Natural,
-    nullable: true,
+  /**
+   * El formateo lo hacía la directiva `currencyMask` de ngx-currency, que es un
+   * ControlValueAccessor y por tanto no funciona sin reactive forms. Se
+   * sustituye por `transformedValue`, replicando la configuración anterior
+   * (decimal ',', miles '.', 2 decimales, admite null y negativos).
+   */
+  protected readonly rawValue = transformedValue(this.value, {
+    parse: (raw: string) => {
+      const normalized = raw
+        .split(THOUSANDS_SEPARATOR)
+        .join('')
+        .replace(DECIMAL_SEPARATOR, '.')
+        .trim();
+      if (normalized === '') return { value: null };
+      const parsed = Number(normalized);
+      if (Number.isNaN(parsed)) {
+        return {
+          error: { kind: 'parse', message: 'common.validator.onlyNumbers' },
         };
       }
+      return { value: parsed };
+    },
+    format: (val) =>
+      val === null || val === undefined
+        ? ''
+        : val.toLocaleString('es-ES', {
+            minimumFractionDigits: PRECISION,
+            maximumFractionDigits: PRECISION,
+          }),
+  });
+}

libs/ui/src/lib/ui/form-field/email-field/email-field.component.html

@@ -6,7 +6,10 @@
   </ng-container>
 
   <input
-    [formControl]="control"
+    [value]="value()"
+    (input)="value.set($any($event.target).value)"
+    (focus)="onFocus()"
+    (blur)="onBlur()"
     [placeholder]="placeholder()!"
     autocomplete="username email"
     type="email"
@@ -15,10 +18,10 @@
     [isAutofocusSelected]="isAutofocus()"
   />
 
-  @if (control.errors) {
+  @if (enableErrorMessage() && hasError()) {
     <mat-error>
-      @for (text of control.errors['message']; track text) {
-        {{ text | translate }}
+      @for (message of errorMessages(); track message) {
+        {{ message | translate }}
       }
     </mat-error>
   }

libs/ui/src/lib/ui/form-field/email-field/email-field.component.ts

@@ -1,5 +1,4 @@
 import { ChangeDetectionStrategy, Component, HostBinding } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import {
   MatFormField,
@@ -17,25 +16,17 @@ import { TranslatePipe } from '@ngx-translate/core';
   selector: 'pi-email-field',
   templateUrl: './email-field.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiEmailFieldComponent,
-      multi: true,
-    },
-  ],
   imports: [
     MatFormField,
     MatLabel,
     MatSuffix,
     PiIconComponent,
     MatInput,
-    ReactiveFormsModule,
     PiAutofocusDirective,
     MatError,
     TranslatePipe,
   ],
 })
-export class PiEmailFieldComponent extends PiBaseFormFieldComponent {
+export class PiEmailFieldComponent extends PiBaseFormFieldComponent<string> {
   @HostBinding('class') className = `pi-form-field__email`;
 }

libs/ui/src/lib/ui/form-field/entities/range.model.ts

@@ -0,0 +1,5 @@
+/** Valor de los campos de rango (`pi-incremental-range-field`, `pi-range-slider`). */
+export interface PiRange {
+  from: number | null;
+  to: number | null;
+}

libs/ui/src/lib/ui/form-field/icon-field/icon-field.component.html

@@ -9,7 +9,10 @@
   <mat-form-field appearance="fill" floatLabel="always">
     <mat-label><ng-content select="pi-label"></ng-content></mat-label>
     <input
-      [formControl]="control"
+      [value]="value()"
+      (input)="value.set($any($event.target).value)"
+      (focus)="onFocus()"
+      (blur)="onBlur()"
       [placeholder]="placeholder()!"
       matInput
       pi-autofocus
@@ -17,10 +20,10 @@
     />
   </mat-form-field>
 </section>
-@if (control.errors && enableErrorMessage()) {
+@if (enableErrorMessage() && hasError()) {
   <mat-error>
-    @for (text of control.errors['message']; track text) {
-      {{ text | translate }}
+    @for (message of errorMessages(); track message) {
+      {{ message | translate }}
     }
   </mat-error>
 }

libs/ui/src/lib/ui/form-field/icon-field/icon-field.component.ts

@@ -4,7 +4,6 @@ import {
   HostBinding,
   input,
 } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
 import { iconSize } from '../../../styles';
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import { PiIconComponent } from '../../icon/icon/icon.component';
@@ -19,25 +18,17 @@ import { TranslatePipe } from '@ngx-translate/core';
   templateUrl: './icon-field.component.html',
   styleUrls: ['./icon-field.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiIconFieldComponent,
-      multi: true,
-    },
-  ],
   imports: [
     PiIconComponent,
     MatFormField,
     MatLabel,
     MatInput,
-    ReactiveFormsModule,
     PiAutofocusDirective,
     MatError,
     TranslatePipe,
   ],
 })
-export class PiIconFieldComponent extends PiBaseFormFieldComponent {
+export class PiIconFieldComponent extends PiBaseFormFieldComponent<string> {
   @HostBinding('class') get componentClasses(): string {
     return ['pi-form-field__text-icon'].join(' ');
   }

libs/ui/src/lib/ui/form-field/incremental-number-field/incremental-number-field.component.html

@@ -28,7 +28,10 @@
   </pi-suffix>
 
   <input
-    [formControl]="control"
+    [value]="rawValue()"
+    (input)="rawValue.set($any($event.target).value)"
+    (focus)="onFocus()"
+    (blur)="onBlur()"
     [placeholder]="placeholder()!"
     matInput
     type="number"
@@ -36,10 +39,10 @@
     [isAutofocusSelected]="isAutofocus()"
   />
 
-  @if (control.errors) {
+  @if (enableErrorMessage() && hasError()) {
     <mat-error>
-      @for (text of control.errors['message']; track text) {
-        {{ text | translate }}
+      @for (message of errorMessages(); track message) {
+        {{ message | translate }}
       }
     </mat-error>
   }

libs/ui/src/lib/ui/form-field/incremental-number-field/incremental-number-field.component.ts

@@ -5,7 +5,6 @@ import {
   Injectable,
   input,
 } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
 import { unit } from '../../../util/models';
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import {
@@ -23,6 +22,7 @@ import {
 import { PiIconComponent } from '../../icon/icon/icon.component';
 import { MatInput } from '@angular/material/input';
 import { PiAutofocusDirective } from '../directives/autofocus.directive';
+import { numericValue } from '../numeric-value';
 
 import { TranslatePipe } from '@ngx-translate/core';
 
@@ -30,13 +30,6 @@ import { TranslatePipe } from '@ngx-translate/core';
   selector: 'pi-incremental-number-field',
   templateUrl: './incremental-number-field.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiIncrementalNumberFieldComponent,
-      multi: true,
-    },
-  ],
   imports: [
     MatFormField,
     MatLabel,
@@ -46,62 +39,62 @@ import { TranslatePipe } from '@ngx-translate/core';
     PiSuffixDirective,
     MatSuffix,
     MatInput,
-    ReactiveFormsModule,
     PiAutofocusDirective,
     MatError,
     TranslatePipe,
   ],
 })
 @Injectable()
-export class PiIncrementalNumberFieldComponent extends PiBaseFormFieldComponent {
+export class PiIncrementalNumberFieldComponent extends PiBaseFormFieldComponent<
+  number | null
+> {
   @HostBinding('class') className = 'pi-form-field__incremental';
 
   readonly slot = input<number>(1);
 
-  readonly max = input<number>();
+  /**
+   * `min` y `max` forman parte del contrato `FormUiControl`: si el campo
+   * enlazado declara validadores `min`/`max`, la directiva `FormField` los
+   * inyecta aquí. De ahí el `| undefined`.
+   */
+  readonly max = input<number | undefined>(undefined);
 
-  readonly min = input<number>(0);
+  readonly min = input<number | undefined>(0);
 
   readonly unit = input<unit>('');
 
   readonly showIncrementButtons = input<boolean>(true);
 
-  incrementValue(): void {
-    if (this.disabled) return;
-    let currentValue = Number(this.control.value);
-    // Handle decimal numbers
+  protected readonly rawValue = numericValue(this.value);
+
+  private step(direction: 1 | -1): void {
+    if (this.disabled()) return;
     const slot = this.slot();
-    if (Number.isInteger(slot)) {
-      this.control.setValue(currentValue + slot);
-    } else {
-      this.control.setValue((currentValue + slot).toFixed(2));
+    const next = (this.value() ?? 0) + direction * slot;
+    // Handle decimal numbers
+    this.value.set(Number.isInteger(slot) ? next : Number(next.toFixed(2)));
   }
+
+  incrementValue(): void {
+    this.step(1);
   }
 
   decrementValue(): void {
-    if (this.disabled) return;
-    let currentValue = Number(this.control.value);
-    // Handle decimal numbers
-    const slot = this.slot();
-    if (Number.isInteger(slot)) {
-      this.control.setValue(currentValue - slot);
-    } else {
-      this.control.setValue((currentValue - slot).toFixed(2));
-    }
+    this.step(-1);
   }
 
   isIncrementButtonDisabled(): boolean {
     return (
-      this.disabled ||
-      this.control.value + this.slot() > (this.max() ?? Infinity)
+      this.disabled() ||
+      (this.value() ?? 0) + this.slot() > (this.max() ?? Infinity)
     );
   }
 
   isDecrementButtonDisabled(): boolean {
     const min = this.min();
     if (min || min === 0) {
-      return this.disabled || this.control.value - this.slot() < min;
+      return this.disabled() || (this.value() ?? 0) - this.slot() < min;
     }
-    return this.disabled;
+    return this.disabled();
   }
 }

libs/ui/src/lib/ui/form-field/incremental-range-field/incremental-range-field.component.html

@@ -1,4 +1,3 @@
-<form [formGroup]="form">
 <div>
   <pi-label>
     <span>{{ 'common.min' | translate }}</span>
@@ -7,7 +6,9 @@
     [slot]="step()"
     [unit]="unit()"
     [min]="minValue()"
-      formControlName="from"
+    [value]="value().from"
+    (valueChange)="setFrom($event)"
+    [disabled]="disabled()"
     [placeholder]="placeholder()!"
     [showIncrementButtons]="showIncrementButtons()"
   >
@@ -24,17 +25,19 @@
     [slot]="step()"
     [unit]="unit()"
     [min]="minValue()"
-      formControlName="to"
+    [value]="value().to"
+    (valueChange)="setTo($event)"
+    [disabled]="disabled()"
     [placeholder]="placeholder()!"
     [showIncrementButtons]="showIncrementButtons()"
   >
   </pi-incremental-number-field>
 </div>
-  @if (form.errors && showError()) {
+
+@if (showError() && errorMessages().length) {
   <mat-error>
-      @for (text of form.errors['message']; track text) {
-        {{ text | translate }}
+    @for (message of errorMessages(); track message) {
+      {{ message | translate }}
     }
   </mat-error>
 }
-</form>

libs/ui/src/lib/ui/form-field/incremental-range-field/incremental-range-field.component.ts

@@ -3,13 +3,12 @@ import {
   Component,
   HostBinding,
   input,
+  model,
+  output,
 } from '@angular/core';
-import {
-  FormGroup,
-  FormGroupDirective,
-  ReactiveFormsModule,
-} from '@angular/forms';
+import { FormValueControl, ValidationError } from '@angular/forms/signals';
 import { unit } from '../../../util/models';
+import { PiRange } from '../entities/range.model';
 import { PiLabelDirective } from '../directives/label.directive';
 import { PiIncrementalNumberFieldComponent } from '../incremental-number-field/incremental-number-field.component';
 import { PiDividerComponent } from '../../divider/divider/divider.component';
@@ -18,12 +17,16 @@ import { MatError } from '@angular/material/form-field';
 
 import { TranslatePipe } from '@ngx-translate/core';
 
+/**
+ * Antes leía un `FormGroup` anidado vía `formGroupName`. Ahora es un control de
+ * valor compuesto: recibe el rango entero por `value` y actualiza cada extremo
+ * sin romper la inmutabilidad de la señal.
+ */
 @Component({
   selector: 'pi-incremental-range-field',
   templateUrl: './incremental-range-field.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
   imports: [
-    ReactiveFormsModule,
     PiLabelDirective,
     PiIncrementalNumberFieldComponent,
     PiDividerComponent,
@@ -31,11 +34,19 @@ import { TranslatePipe } from '@ngx-translate/core';
     TranslatePipe,
   ],
 })
-export class PiIncrementalRangeFieldComponent {
+export class PiIncrementalRangeFieldComponent implements FormValueControl<PiRange> {
   @HostBinding('class') className =
     'pi-field pi-form-field__incremental pi-form-field__incremental--range';
 
-  readonly formGroupName = input.required<string>();
+  /* --- Contrato FormValueControl --------------------------------------- */
+
+  readonly value = model.required<PiRange>();
+  readonly errors = input<readonly ValidationError.WithOptionalFieldTree[]>([]);
+  readonly disabled = input(false);
+  readonly touch = output<void>();
+
+  /* --- Presentación ----------------------------------------------------- */
+
   readonly minValue = input.required<number>();
   readonly maxValue = input.required<number>();
   readonly unit = input.required<unit>();
@@ -44,9 +55,14 @@ export class PiIncrementalRangeFieldComponent {
   readonly showIncrementButtons = input<boolean>(true);
   readonly placeholder = input<string>();
 
-  constructor(private rootFormGroup: FormGroupDirective) {}
+  protected readonly errorMessages = () =>
+    this.errors().map((error) => error.message ?? error.kind);
 
-  get form() {
-    return this.rootFormGroup.control.get(this.formGroupName()) as FormGroup;
+  protected setFrom(from: number | null): void {
+    this.value.set({ ...this.value(), from });
+  }
+
+  protected setTo(to: number | null): void {
+    this.value.set({ ...this.value(), to });
   }
 }

libs/ui/src/lib/ui/form-field/index.ts

@@ -4,6 +4,9 @@ export * from './directives/checkbox-grid.directive';
 export * from './directives/autofocus.directive';
 
 export * from './entities/radio.model';
+export * from './entities/range.model';
+
+export * from './numeric-value';
 
 export * from './incremental-number-field/incremental-number-field.component';
 export * from './number-field/number-field.component';

libs/ui/src/lib/ui/form-field/number-field/number-field.component.html

@@ -10,7 +10,10 @@
   </ng-container>
 
   <input
-    [formControl]="control"
+    [value]="rawValue()"
+    (input)="rawValue.set($any($event.target).value)"
+    (focus)="onFocus()"
+    (blur)="onBlur()"
     [placeholder]="placeholder()!"
     matInput
     type="number"
@@ -18,10 +21,10 @@
     [isAutofocusSelected]="isAutofocus()"
   />
 
-  @if (control.errors) {
+  @if (enableErrorMessage() && hasError()) {
     <mat-error>
-      @for (text of control.errors['message']; track text) {
-        {{ text | translate }}
+      @for (message of errorMessages(); track message) {
+        {{ message | translate }}
       }
     </mat-error>
   }

libs/ui/src/lib/ui/form-field/number-field/number-field.component.ts

@@ -4,7 +4,6 @@ import {
   HostBinding,
   Injectable,
 } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import {
   MatFormField,
@@ -15,6 +14,7 @@ import {
 } from '@angular/material/form-field';
 import { MatInput } from '@angular/material/input';
 import { PiAutofocusDirective } from '../directives/autofocus.directive';
+import { numericValue } from '../numeric-value';
 
 import { TranslatePipe } from '@ngx-translate/core';
 
@@ -22,26 +22,22 @@ import { TranslatePipe } from '@ngx-translate/core';
   selector: 'pi-number-field',
   templateUrl: './number-field.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiNumberFieldComponent,
-      multi: true,
-    },
-  ],
   imports: [
     MatFormField,
     MatLabel,
     MatPrefix,
     MatSuffix,
     MatInput,
-    ReactiveFormsModule,
     PiAutofocusDirective,
     MatError,
     TranslatePipe,
   ],
 })
 @Injectable()
-export class PiNumberFieldComponent extends PiBaseFormFieldComponent {
+export class PiNumberFieldComponent extends PiBaseFormFieldComponent<
+  number | null
+> {
   @HostBinding('class') className = `pi-form-field__number`;
+
+  protected readonly rawValue = numericValue(this.value);
 }

libs/ui/src/lib/ui/form-field/numeric-value.ts

@@ -0,0 +1,29 @@
+import { ModelSignal } from '@angular/core';
+import {
+  TransformedValueSignal,
+  transformedValue,
+} from '@angular/forms/signals';
+
+/**
+ * Puente entre el `<input>` (que siempre da texto) y un modelo numérico.
+ *
+ * `transformedValue` es el mecanismo de Signal Forms para esto: además de
+ * formatear y parsear, reporta los errores de parseo al campo enlazado.
+ */
+export function numericValue(
+  value: ModelSignal<number | null>,
+): TransformedValueSignal<string> {
+  return transformedValue(value, {
+    parse: (raw: string) => {
+      if (raw.trim() === '') return { value: null };
+      const parsed = Number(raw);
+      if (Number.isNaN(parsed)) {
+        return {
+          error: { kind: 'parse', message: 'common.validator.onlyNumbers' },
+        };
+      }
+      return { value: parsed };
+    },
+    format: (val) => val?.toString() ?? '',
+  });
+}

libs/ui/src/lib/ui/form-field/password-field/password-field.component.html

@@ -4,7 +4,7 @@
   <pi-suffix matSuffix>
     <pi-icon
       [icon]="hide ? 'eye-off' : 'eye'"
-      [color]="disabled ? 'grey' : 'black'"
+      [color]="disabled() ? 'grey' : 'black'"
       size="medium"
       (click)="hide = !hide"
       [attr.aria-label]="'Hide password'"
@@ -13,7 +13,10 @@
   </pi-suffix>
 
   <input
-    [formControl]="control"
+    [value]="value()"
+    (input)="value.set($any($event.target).value)"
+    (focus)="onFocus()"
+    (blur)="onBlur()"
     [placeholder]="placeholder()!"
     [type]="hide ? 'password' : 'text'"
     autocomplete="current-password"
@@ -22,10 +25,10 @@
     [isAutofocusSelected]="isAutofocus()"
   />
 
-  @if (control.errors) {
+  @if (enableErrorMessage() && hasError()) {
     <mat-error>
-      @for (text of control.errors['message']; track text) {
-        {{ text | translate }}
+      @for (message of errorMessages(); track message) {
+        {{ message | translate }}
       }
     </mat-error>
   }

libs/ui/src/lib/ui/form-field/password-field/password-field.component.ts

@@ -1,5 +1,4 @@
 import { ChangeDetectionStrategy, Component, HostBinding } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import {
   MatFormField,
@@ -18,13 +17,6 @@ import { TranslatePipe } from '@ngx-translate/core';
   selector: 'pi-password-field',
   templateUrl: './password-field.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiPasswordFieldComponent,
-      multi: true,
-    },
-  ],
   imports: [
     MatFormField,
     MatLabel,
@@ -32,13 +24,12 @@ import { TranslatePipe } from '@ngx-translate/core';
     MatSuffix,
     PiIconComponent,
     MatInput,
-    ReactiveFormsModule,
     PiAutofocusDirective,
     MatError,
     TranslatePipe,
   ],
 })
-export class PiPasswordFieldComponent extends PiBaseFormFieldComponent {
+export class PiPasswordFieldComponent extends PiBaseFormFieldComponent<string> {
   @HostBinding('class') className = `pi-form-field__password`;
 
   hide = true;

libs/ui/src/lib/ui/form-field/phone-field/phone-field.component.html

@@ -6,7 +6,10 @@
   </ng-container>
 
   <input
-    [formControl]="control"
+    [value]="value()"
+    (input)="value.set($any($event.target).value)"
+    (focus)="onFocus()"
+    (blur)="onBlur()"
     [placeholder]="placeholder()!"
     type="tel"
     matInput
@@ -14,10 +17,10 @@
     [isAutofocusSelected]="isAutofocus()"
   />
 
-  @if (control.errors) {
+  @if (enableErrorMessage() && hasError()) {
     <mat-error>
-      @for (text of control.errors['message']; track text) {
-        {{ text | translate }}
+      @for (message of errorMessages(); track message) {
+        {{ message | translate }}
       }
     </mat-error>
   }

libs/ui/src/lib/ui/form-field/phone-field/phone-field.component.ts

@@ -1,5 +1,4 @@
 import { ChangeDetectionStrategy, Component, HostBinding } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import {
   MatFormField,
@@ -17,25 +16,17 @@ import { TranslatePipe } from '@ngx-translate/core';
   selector: 'pi-phone-field',
   templateUrl: './phone-field.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiPhoneFieldComponent,
-      multi: true,
-    },
-  ],
   imports: [
     MatFormField,
     MatLabel,
     MatSuffix,
     PiIconComponent,
     MatInput,
-    ReactiveFormsModule,
     PiAutofocusDirective,
     MatError,
     TranslatePipe,
   ],
 })
-export class PiPhoneFieldComponent extends PiBaseFormFieldComponent {
+export class PiPhoneFieldComponent extends PiBaseFormFieldComponent<string> {
   @HostBinding('class') className = `pi-form-field__phone`;
 }

libs/ui/src/lib/ui/form-field/search-field/search-field.component.html

@@ -9,7 +9,8 @@
     #input
     (focus)="onFocus()"
     (blur)="onBlur()"
-    [formControl]="control"
+    [value]="value()"
+    (input)="value.set($any($event.target).value)"
     [placeholder]="placeholder()!"
     type="search"
   />

libs/ui/src/lib/ui/form-field/search-field/search-field.component.ts

@@ -3,15 +3,13 @@ import {
   Component,
   ElementRef,
   HostBinding,
-  Injector,
   effect,
   input,
   model,
   output,
+  untracked,
   viewChild,
 } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
-import { OnInit } from '@angular/core';
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import { PiIconComponent } from '../../icon/icon/icon.component';
 
@@ -20,19 +18,9 @@ import { PiIconComponent } from '../../icon/icon/icon.component';
   templateUrl: './search-field.component.html',
   styleUrls: ['./search-field.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiSearchFieldComponent,
-      multi: true,
-    },
-  ],
-  imports: [PiIconComponent, ReactiveFormsModule],
+  imports: [PiIconComponent],
 })
-export class PiSearchFieldComponent
-  extends PiBaseFormFieldComponent
-  implements OnInit
-{
+export class PiSearchFieldComponent extends PiBaseFormFieldComponent<string> {
   @HostBinding('class') override get classes(): string {
     const isExpandedClass = this.isExpanded() ? 'is-expanded' : 'is-collapsed';
     return ['pi-field pi-form-field__search', isExpandedClass].join(' ');
@@ -48,21 +36,20 @@ export class PiSearchFieldComponent
 
   /**
    * `model` porque además de recibirse desde fuera, el propio componente la
-   * escribe (openField / closeField / valueChanges).
+   * escribe (openField / closeField / cuando entra un valor).
    */
   readonly isExpanded = model(false);
 
-  constructor(injector: Injector) {
-    super(injector);
-    // Antes lo emitía el setter en cada asignación.
-    effect(() => this.isActive.emit(this.isExpanded()));
-  }
+  constructor() {
+    super();
 
-  ngOnInit(): void {
-    this.isExpanded.set(!!this.control.value || !this.isClosable());
-    this.control.valueChanges.subscribe((value: any) => {
-      if (value) {
-        this.isExpanded.set(true);
+    effect(() => this.isActive.emit(this.isExpanded()));
+
+    // Sustituye al ngOnInit + suscripción a control.valueChanges: en cuanto hay
+    // valor (o el campo no se puede cerrar) el buscador queda desplegado.
+    effect(() => {
+      if (this.value() || !this.isClosable()) {
+        untracked(() => this.isExpanded.set(true));
       }
     });
   }
@@ -76,8 +63,8 @@ export class PiSearchFieldComponent
     if (this.isClosable()) {
       this.isExpanded.set(false);
     }
-    if (this.control.value) {
-      this.control.reset();
+    if (this.value()) {
+      this.value.set('');
       this.resetClick.emit();
     }
   }

libs/ui/src/lib/ui/form-field/slide-toggle/slide-toggle.component.html

@@ -1,8 +1,11 @@
-<label [for]="formControlName() + 'checkbox'">
+<label [for]="name() + 'checkbox'">
   <input
-    [formControl]="control"
     type="checkbox"
-    [id]="formControlName() + 'checkbox'"
+    [id]="name() + 'checkbox'"
+    [checked]="checked()"
+    [disabled]="disabled()"
+    (change)="checked.set($any($event.target).checked)"
+    (blur)="touch.emit()"
   />
   <span></span>
 </label>

libs/ui/src/lib/ui/form-field/slide-toggle/slide-toggle.component.ts

@@ -2,44 +2,41 @@ import {
   ChangeDetectionStrategy,
   Component,
   HostBinding,
-  OnChanges,
-  OnInit,
-  SimpleChanges,
   input,
+  model,
+  output,
 } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
-import { PiBaseFormFieldComponent } from '../base-form-field.component';
+import { FormCheckboxControl } from '@angular/forms/signals';
 
+/**
+ * Implementa `FormCheckboxControl` en vez de `FormValueControl`: el contrato de
+ * Signal Forms para casillas usa `checked` y prohíbe expresamente declarar
+ * `value`, así que este componente no puede extender `PiBaseFormFieldComponent`.
+ *
+ * Antes mantenía un campo `isChecked` sincronizado por suscripción a
+ * `control.valueChanges`; ahora el propio `checked` es la fuente de verdad.
+ */
 @Component({
   selector: 'pi-slide-toggle',
   templateUrl: './slide-toggle.component.html',
   styleUrls: ['./slide-toggle.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiSlideToggleComponent,
-      multi: true,
-    },
-  ],
-  imports: [ReactiveFormsModule],
 })
-export class PiSlideToggleComponent
-  extends PiBaseFormFieldComponent
-  implements OnInit
-{
-  @HostBinding('class') override get classes(): string {
-    const isCheckedClass = this.isChecked ? 'is-checked' : '';
-    return ['pi-slide-toggle', isCheckedClass, this.isDisabledClass].join(' ');
+export class PiSlideToggleComponent implements FormCheckboxControl {
+  @HostBinding('class') get classes(): string {
+    const isCheckedClass = this.checked() ? 'is-checked' : '';
+    const isDisabledClass = this.disabled() ? 'is-disabled' : '';
+    return ['pi-slide-toggle', isCheckedClass, isDisabledClass].join(' ');
   }
 
+  /* --- Contrato FormCheckboxControl ------------------------------------ */
+
+  readonly checked = model(false);
+  readonly disabled = input(false);
+  readonly name = input('');
+  readonly touch = output<void>();
+
+  /* --- Presentación ----------------------------------------------------- */
+
   readonly label = input<string>();
-
-  isChecked!: boolean;
-
-  ngOnInit(): void {
-    this.control.valueChanges.subscribe((value: boolean) => {
-      this.isChecked = value;
-    });
-  }
 }

libs/ui/src/lib/ui/form-field/text-field/text-field.component.html

@@ -6,17 +6,20 @@
   </ng-container>
 
   <input
-    [formControl]="control"
+    [value]="value()"
+    (input)="value.set($any($event.target).value)"
+    (focus)="onFocus()"
+    (blur)="onBlur()"
     [placeholder]="placeholder()!"
     matInput
     pi-autofocus
     [isAutofocusSelected]="isAutofocus()"
   />
 
-  @if (control.errors) {
+  @if (enableErrorMessage() && hasError()) {
     <mat-error>
-      @for (text of control.errors['message']; track text) {
-        {{ text | translate }}
+      @for (message of errorMessages(); track message) {
+        {{ message | translate }}
       }
     </mat-error>
   }

libs/ui/src/lib/ui/form-field/text-field/text-field.component.ts

@@ -1,5 +1,4 @@
 import { ChangeDetectionStrategy, Component, HostBinding } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import {
   MatFormField,
@@ -16,24 +15,16 @@ import { TranslatePipe } from '@ngx-translate/core';
   selector: 'pi-text-field',
   templateUrl: './text-field.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiTextFieldComponent,
-      multi: true,
-    },
-  ],
   imports: [
     MatFormField,
     MatLabel,
     MatSuffix,
     MatInput,
-    ReactiveFormsModule,
     PiAutofocusDirective,
     MatError,
     TranslatePipe,
   ],
 })
-export class PiTextFieldComponent extends PiBaseFormFieldComponent {
+export class PiTextFieldComponent extends PiBaseFormFieldComponent<string> {
   @HostBinding('class') className = `pi-form-field__text`;
 }

libs/ui/src/lib/ui/form-field/textarea/textarea.component.html

@@ -2,10 +2,13 @@
   <mat-label><ng-content select="pi-label"></ng-content></mat-label>
 
   <textarea
-    [formControl]="control"
+    [value]="value()"
+    (input)="value.set($any($event.target).value)"
+    (focus)="onFocus()"
+    (blur)="onBlur()"
     [placeholder]="placeholder()!"
-    [name]="formControlName()"
-    [maxLength]="maxLength()"
+    [name]="name()"
+    [maxLength]="maxLength()!"
     matInput
     cdkTextareaAutosize
     #autosize="cdkTextareaAutosize"
@@ -15,13 +18,13 @@
     [isAutofocusSelected]="isAutofocus()"
   ></textarea>
 </mat-form-field>
-@if (control.errors && enableErrorMessage()) {
+@if (enableErrorMessage() && hasError()) {
   <mat-error>
-    @for (text of control.errors['message']; track text) {
-      {{ text | translate }}
+    @for (message of errorMessages(); track message) {
+      {{ message | translate }}
     }
   </mat-error>
 }
 @if (maxLength() !== 1e6) {
-  <span>{{ control.value?.length || 0 }} / {{ maxLength() }}</span>
+  <span>{{ value().length }} / {{ maxLength() }}</span>
 }

libs/ui/src/lib/ui/form-field/textarea/textarea.component.ts

@@ -4,7 +4,6 @@ import {
   HostBinding,
   input,
 } from '@angular/core';
-import { NG_VALUE_ACCESSOR, ReactiveFormsModule } from '@angular/forms';
 import { PiBaseFormFieldComponent } from '../base-form-field.component';
 import { MatFormField, MatLabel, MatError } from '@angular/material/form-field';
 import { MatInput } from '@angular/material/input';
@@ -17,26 +16,23 @@ import { TranslatePipe } from '@ngx-translate/core';
   selector: 'pi-textarea',
   templateUrl: './textarea.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiTextareaComponent,
-      multi: true,
-    },
-  ],
   imports: [
     MatFormField,
     MatLabel,
     MatInput,
     CdkTextareaAutosize,
-    ReactiveFormsModule,
     PiAutofocusDirective,
     MatError,
     TranslatePipe,
   ],
 })
-export class PiTextareaComponent extends PiBaseFormFieldComponent {
+export class PiTextareaComponent extends PiBaseFormFieldComponent<string> {
   @HostBinding('class') className = 'pi-form-field__textarea';
 
-  readonly maxLength = input<number>(1e6);
+  /**
+   * `number | undefined` porque el contrato `FormUiControl` declara `maxLength`
+   * así: si el campo enlazado tiene un validador `maxLength`, la directiva
+   * `FormField` lo inyecta aquí automáticamente.
+   */
+  readonly maxLength = input<number | undefined>(1e6);
 }

libs/ui/src/lib/ui/slider/base-slider.component.ts

@@ -1,17 +1,20 @@
 // Angular
-import { Directive, HostBinding, input, viewChild } from '@angular/core';
-import { FormControlDirective } from '@angular/forms';
+import { Directive, HostBinding, input, output } from '@angular/core';
 
 // Models
 import { unit } from '../../util/models';
 
+/**
+ * Parte común de los sliders. Los métodos de ControlValueAccessor que delegaban
+ * en el `FormControlDirective` de la vista han desaparecido: con Signal Forms
+ * cada slider expone su propio `value`/`checked` y la directiva `FormField` se
+ * encarga de la sincronización.
+ */
 @Directive()
 export abstract class PiBaseSliderComponent {
-  readonly formControlDirective = viewChild(FormControlDirective);
-
   @HostBinding('class')
   get classes(): string {
-    const isDisabledClass = this.isDisabled() ? 'is-disabled' : '';
+    const isDisabledClass = this.disabled() ? 'is-disabled' : '';
     const flexDirection = this.flexDirection();
     const flexDirectionClass =
       flexDirection !== 'column' &&
@@ -30,28 +33,11 @@ export abstract class PiBaseSliderComponent {
   // Skin
   readonly flexDirection = input<'column' | 'column-reverse'>('column');
 
-  // Behaviour
-  readonly isDisabled = input<boolean>();
+  // Contrato FormUiControl
+  readonly disabled = input(false);
+  readonly touch = output<void>();
 
   formatLabel = (value: number) => {
     return `${value} ${this.unit()}`;
   };
-
-  registerOnTouched(fn: any): void {
-    this.formControlDirective()?.valueAccessor?.registerOnTouched(fn);
-  }
-
-  registerOnChange(fn: any): void {
-    this.formControlDirective()?.valueAccessor?.registerOnChange(fn);
-  }
-
-  writeValue(obj: any): void {
-    this.formControlDirective()?.valueAccessor?.writeValue(obj);
-  }
-
-  setDisabledState(isDisabled: boolean): void {
-    this.formControlDirective()?.valueAccessor?.setDisabledState
-      ? isDisabled
-      : null;
-  }
 }

libs/ui/src/lib/ui/slider/range-slider/range-slider.component.html

@@ -1,13 +1,21 @@
-<form [formGroup]="form">
 <mat-slider
   [min]="minValue()"
   [max]="maxValue()"
   [discrete]="thumbLabel()"
   [displayWith]="formatLabel"
   [step]="step()"
-    [disabled]="isDisabled()"
+  [disabled]="disabled()"
 >
-    <input formControlName="from" matSliderStartThumb />
-    <input formControlName="to" matSliderEndThumb />
+  <input
+    matSliderStartThumb
+    [value]="value().from"
+    (valueChange)="setFrom($event)"
+    (blur)="touch.emit()"
+  />
+  <input
+    matSliderEndThumb
+    [value]="value().to"
+    (valueChange)="setTo($event)"
+    (blur)="touch.emit()"
+  />
 </mat-slider>
-</form>

libs/ui/src/lib/ui/slider/range-slider/range-slider.component.ts

@@ -3,58 +3,40 @@ import {
   ChangeDetectionStrategy,
   Component,
   HostBinding,
-  OnInit,
-  forwardRef,
   input,
+  model,
 } from '@angular/core';
-import {
-  FormGroup,
-  FormGroupDirective,
-  NG_VALUE_ACCESSOR,
-  ReactiveFormsModule,
-} from '@angular/forms';
+import { FormValueControl, ValidationError } from '@angular/forms/signals';
 
 // Component
 import { PiBaseSliderComponent } from '../base-slider.component';
+import { PiRange } from '../../form-field/entities/range.model';
 import { MatSlider, MatSliderRangeThumb } from '@angular/material/slider';
 
+/**
+ * Antes leía un `FormGroup` anidado vía `formGroupName`; ahora recibe el rango
+ * entero por `value`, igual que `pi-incremental-range-field`.
+ */
 @Component({
   selector: 'pi-range-slider',
   templateUrl: './range-slider.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiRangeSliderComponent,
-      multi: true,
-    },
-  ],
-  imports: [
-    ReactiveFormsModule,
-    MatSlider,
-    MatSliderRangeThumb,
-    forwardRef(() => PiRangeSliderComponent),
-  ],
+  imports: [MatSlider, MatSliderRangeThumb],
 })
 export class PiRangeSliderComponent
   extends PiBaseSliderComponent
-  implements OnInit
+  implements FormValueControl<PiRange>
 {
   @HostBinding('class') className = 'pi-slider__range';
 
-  readonly formGroupName = input.required<string>();
+  readonly value = model.required<PiRange>();
+  readonly errors = input<readonly ValidationError.WithOptionalFieldTree[]>([]);
 
-  constructor(private rootFormGroup: FormGroupDirective) {
-    super();
+  protected setFrom(from: number): void {
+    this.value.set({ ...this.value(), from });
   }
 
-  get form() {
-    return this.rootFormGroup.control.get(this.formGroupName()) as FormGroup;
-  }
-
-  ngOnInit(): void {
-    if (this.isDisabled()) {
-      this.form.disable();
-    }
+  protected setTo(to: number): void {
+    this.value.set({ ...this.value(), to });
   }
 }

libs/ui/src/lib/ui/slider/slider/slider.component.html

@@ -1,16 +1,21 @@
 @if (label()) {
   <span>
     <label>{{ label() }}</label>
-    <span>{{ control?.value }} {{ unit() }}</span>
+    <span>{{ value() }} {{ unit() }}</span>
   </span>
 }
 <mat-slider
   [min]="minValue()"
   [max]="maxValue()"
-  [discrete]="this.isDisabled() ? null : thumbLabel()"
+  [discrete]="disabled() ? false : thumbLabel()"
   [displayWith]="formatLabel"
   [step]="step()"
-  [disabled]="isDisabled()"
+  [disabled]="disabled()"
 >
-  <input [formControl]="control" matSliderThumb />
+  <input
+    matSliderThumb
+    [value]="value()"
+    (valueChange)="value.set($event)"
+    (blur)="touch.emit()"
+  />
 </mat-slider>

libs/ui/src/lib/ui/slider/slider/slider.component.ts

@@ -2,15 +2,10 @@
 import {
   ChangeDetectionStrategy,
   Component,
-  Injector,
-  OnInit,
   input,
+  model,
 } from '@angular/core';
-import {
-  ControlContainer,
-  NG_VALUE_ACCESSOR,
-  ReactiveFormsModule,
-} from '@angular/forms';
+import { FormValueControl, ValidationError } from '@angular/forms/signals';
 
 // Component
 import { PiBaseSliderComponent } from '../base-slider.component';
@@ -22,33 +17,12 @@ import { MatSlider, MatSliderThumb } from '@angular/material/slider';
   templateUrl: './slider.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
   styleUrls: ['./slider.component.scss'],
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: PiSliderComponent,
-      multi: true,
-    },
-  ],
-  imports: [MatSlider, MatSliderThumb, ReactiveFormsModule],
+  imports: [MatSlider, MatSliderThumb],
 })
-export class PiSliderComponent extends PiBaseSliderComponent implements OnInit {
-  readonly formControlName = input<string>();
-
-  constructor(private injector: Injector) {
-    super();
-  }
-
-  get control(): any {
-    return this.controlContainer.control?.get(this.formControlName());
-  }
-
-  get controlContainer(): any {
-    return this.injector.get(ControlContainer);
-  }
-
-  ngOnInit(): void {
-    if (this.isDisabled()) {
-      this.control.disable();
-    }
-  }
+export class PiSliderComponent
+  extends PiBaseSliderComponent
+  implements FormValueControl<number>
+{
+  readonly value = model.required<number>();
+  readonly errors = input<readonly ValidationError.WithOptionalFieldTree[]>([]);
 }