feat(input): ionChange will only emit from user committed changes (#25858)

Resolves #20106, #20061

angular/src/directives/control-value-accessors/boolean-value-accessor.ts

@@ -25,6 +25,6 @@ export class BooleanValueAccessorDirective extends ValueAccessor {
 
   @HostListener('ionChange', ['$event.target'])
   _handleIonChange(el: any): void {
-    this.handleChangeEvent(el, el.checked);
+    this.handleValueChange(el, el.checked);
   }
 }

angular/src/directives/control-value-accessors/index.ts

@@ -0,0 +1,5 @@
+export * from './boolean-value-accessor';
+export * from './numeric-value-accessor';
+export * from './radio-value-accessor';
+export * from './select-value-accessor';
+export * from './text-value-accessor';

angular/src/directives/control-value-accessors/numeric-value-accessor.ts

@@ -18,13 +18,13 @@ export class NumericValueAccessorDirective extends ValueAccessor {
     super(injector, el);
   }
 
-  @HostListener('ionChange', ['$event.target'])
-  _handleIonChange(el: any): void {
-    this.handleChangeEvent(el, el.value);
+  @HostListener('ionInput', ['$event.target'])
+  handleInputEvent(el: HTMLIonInputElement): void {
+    this.handleValueChange(el, el.value);
   }
 
   registerOnChange(fn: (_: number | null) => void): void {
-    super.registerOnChange((value) => {
+    super.registerOnChange((value: string) => {
       fn(value === '' ? null : parseFloat(value));
     });
   }

angular/src/directives/control-value-accessors/radio-value-accessor.ts

@@ -21,6 +21,6 @@ export class RadioValueAccessorDirective extends ValueAccessor {
 
   @HostListener('ionSelect', ['$event.target'])
   _handleIonSelect(el: any): void {
-    this.handleChangeEvent(el, el.checked);
+    this.handleValueChange(el, el.checked);
   }
 }

angular/src/directives/control-value-accessors/select-value-accessor.ts

@@ -21,6 +21,6 @@ export class SelectValueAccessorDirective extends ValueAccessor {
 
   @HostListener('ionChange', ['$event.target'])
   _handleChangeEvent(el: any): void {
-    this.handleChangeEvent(el, el.value);
+    this.handleValueChange(el, el.value);
   }
 }

angular/src/directives/control-value-accessors/text-value-accessor.ts

@@ -5,7 +5,7 @@ import { ValueAccessor } from './value-accessor';
 
 @Directive({
   /* tslint:disable-next-line:directive-selector */
-  selector: 'ion-input:not([type=number]),ion-textarea,ion-searchbar',
+  selector: 'ion-textarea,ion-searchbar',
   providers: [
     {
       provide: NG_VALUE_ACCESSOR,
@@ -21,6 +21,27 @@ export class TextValueAccessorDirective extends ValueAccessor {
 
   @HostListener('ionChange', ['$event.target'])
   _handleInputEvent(el: any): void {
-    this.handleChangeEvent(el, el.value);
+    this.handleValueChange(el, el.value);
+  }
+}
+
+@Directive({
+  selector: 'ion-input:not([type=number])',
+  providers: [
+    {
+      provide: NG_VALUE_ACCESSOR,
+      useExisting: InputValueAccessorDirective,
+      multi: true,
+    },
+  ],
+})
+export class InputValueAccessorDirective extends ValueAccessor {
+  constructor(injector: Injector, el: ElementRef) {
+    super(injector, el);
+  }
+
+  @HostListener('ionInput', ['$event.target'])
+  _handleInputEvent(el: any): void {
+    this.handleValueChange(el, el.value);
   }
 }

angular/src/directives/control-value-accessors/value-accessor.ts

@@ -29,7 +29,20 @@ export class ValueAccessor implements ControlValueAccessor, AfterViewInit, OnDes
     setIonicClasses(this.el);
   }
 
-  handleChangeEvent(el: HTMLElement, value: any): void {
+  /**
+   * Notifies the ControlValueAccessor of a change in the value of the control.
+   *
+   * This is called by each of the ValueAccessor directives when we want to update
+   * the status and validity of the form control. For example with text components this
+   * is called when the ionInput event is fired. For select components this is called
+   * when the ionChange event is fired.
+   *
+   * This also updates the Ionic form status classes on the element.
+   *
+   * @param el The component element.
+   * @param value The new value of the control.
+   */
+  handleValueChange(el: HTMLElement, value: any): void {
     if (el === this.el.nativeElement) {
       if (value !== this.lastValue) {
         this.lastValue = value;