fix(angular): apply validation classes properly

* fix(angular): add validation classes to ion-item

* fix(inputs): focus handling

fixes #17171
fixes #16052
fixes #15572
fixes #16452
fixes #17063

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

@@ -43,26 +43,43 @@ export class ValueAccessor implements ControlValueAccessor {
 
 export function setIonicClasses(element: ElementRef) {
   requestAnimationFrame(() => {
-    const classList = (element.nativeElement as HTMLElement).classList;
+    const input = element.nativeElement as HTMLElement;
+    const classes = getClasses(input);
+    setClasses(input, classes);
 
-    classList.remove(
-      'ion-valid',
-      'ion-invalid',
-      'ion-touched',
-      'ion-untouched',
-      'ion-dirty',
-      'ion-pristine'
-    );
-
-    for (let i = 0; i < classList.length; i++) {
-      const item = classList.item(i);
-      if (item !== null && startsWith(item, 'ng-')) {
-        classList.add(`ion-${item.substr(3)}`);
-      }
+    const item = input.closest('ion-item');
+    if (item) {
+      setClasses(item, classes);
     }
   });
 }
 
+function getClasses(element: HTMLElement) {
+  const classList = element.classList;
+  const classes = [];
+  for (let i = 0; i < classList.length; i++) {
+    const item = classList.item(i);
+    if (item !== null && startsWith(item, 'ng-')) {
+      classes.push(`ion-${item.substr(3)}`);
+    }
+  }
+  return classes;
+}
+
+function setClasses(element: HTMLElement, classes: string[]) {
+  const classList = element.classList;
+
+  classList.remove(
+    'ion-valid',
+    'ion-invalid',
+    'ion-touched',
+    'ion-untouched',
+    'ion-dirty',
+    'ion-pristine'
+  );
+  classList.add(...classes);
+}
+
 function startsWith(input: string, search: string): boolean {
   return input.substr(0, search.length) === search;
 }

angular/test/test-app/src/app/app-routing.module.ts

@@ -17,10 +17,12 @@ import { NestedOutletPage2Component } from './nested-outlet-page2/nested-outlet-
 import { ViewChildComponent } from './view-child/view-child.component';
 import { ProvidersComponent } from './providers/providers.component';
 import { SlidesComponent } from './slides/slides.component';
+import { FormComponent } from './form/form.component';
 
 const routes: Routes = [
   { path: '', component: HomePageComponent },
   { path: 'inputs', component: InputsComponent },
+  { path: 'form', component: FormComponent },
   { path: 'modals', component: ModalComponent },
   { path: 'view-child', component: ViewChildComponent },
   { path: 'providers', component: ProvidersComponent },

angular/test/test-app/src/app/app.module.ts

@@ -1,5 +1,6 @@
 import { BrowserModule } from '@angular/platform-browser';
 import { NgModule } from '@angular/core';
+import { ReactiveFormsModule } from '@angular/forms';
 
 import { AppRoutingModule } from './app-routing.module';
 import { AppComponent } from './app.component';
@@ -25,6 +26,7 @@ import { NavComponent } from './nav/nav.component';
 import { ViewChildComponent } from './view-child/view-child.component';
 import { ProvidersComponent } from './providers/providers.component';
 import { SlidesComponent } from './slides/slides.component';
+import { FormComponent } from './form/form.component';
 
 @NgModule({
   declarations: [
@@ -48,12 +50,14 @@ import { SlidesComponent } from './slides/slides.component';
     NavComponent,
     ViewChildComponent,
     ProvidersComponent,
-    SlidesComponent
+    SlidesComponent,
+    FormComponent
   ],
   imports: [
     BrowserModule,
     AppRoutingModule,
     FormsModule,
+    ReactiveFormsModule,
     IonicModule.forRoot(),
   ],
   entryComponents: [

angular/test/test-app/src/app/form/form.component.html

@@ -0,0 +1,76 @@
+<ion-header>
+  <ion-toolbar>
+    <ion-title>
+      Forms test
+    </ion-title>
+  </ion-toolbar>
+</ion-header>
+
+<ion-content>
+  <form [formGroup]="profileForm">
+    <ion-list>
+
+      <ion-item>
+        <ion-label>DateTime</ion-label>
+        <ion-datetime formControlName="datetime" min="1994-03-14" max="2017-12-09" display-format="MM/DD/YYYY"></ion-datetime>
+      </ion-item>
+
+      <ion-item>
+        <ion-label>Select</ion-label>
+        <ion-select formControlName="select">
+          <ion-select-option value="">No Game Console</ion-select-option>
+          <ion-select-option value="nes">NES</ion-select-option>
+          <ion-select-option value="n64" selected>Nintendo64</ion-select-option>
+          <ion-select-option value="ps">PlayStation</ion-select-option>
+          <ion-select-option value="genesis">Sega Genesis</ion-select-option>
+          <ion-select-option value="saturn">Sega Saturn</ion-select-option>
+          <ion-select-option value="snes">SNES</ion-select-option>
+        </ion-select>
+      </ion-item>
+
+      <ion-item>
+        <ion-label>Toggle</ion-label>
+        <ion-toggle formControlName="toggle" slot="end"></ion-toggle>
+      </ion-item>
+
+      <ion-item>
+        <ion-label>Input (required)</ion-label>
+        <ion-input formControlName="input"></ion-input>
+      </ion-item>
+
+      <ion-item>
+        <ion-label>Input</ion-label>
+        <ion-input formControlName="input2"></ion-input>
+      </ion-item>
+
+      <ion-item>
+        <ion-label>Checkbox</ion-label>
+        <ion-checkbox formControlName="checkbox" slot="start"></ion-checkbox>
+      </ion-item>
+
+      <ion-item>
+        <ion-label>Range</ion-label>
+        <ion-range formControlName="range"></ion-range>
+      </ion-item>
+
+    </ion-list>
+    <p>
+      Form Status: <span id="status">{{ profileForm.status }}</span>
+    </p>
+    <p>
+      Form Status: <span id="data">{{ profileForm.value | json }}</span>
+    </p>
+    <ion-button type="submit" [disabled]="!profileForm.valid">Submit</ion-button>
+
+  </form>
+  <ion-list>
+    <ion-item>
+      <ion-label>Outside form</ion-label>
+      <ion-toggle [formControl]="outsideToggle"></ion-toggle>
+      <ion-note slot="end">{{outsideToggle.value}}</ion-note>
+    </ion-item>
+  </ion-list>
+  <p>
+    <ion-button (click)="setValues()" id="set-button">Set values</ion-button>
+  </p>
+</ion-content>

angular/test/test-app/src/app/form/form.component.ts

@@ -0,0 +1,37 @@
+import { Component } from '@angular/core';
+import { FormGroup, FormBuilder, Validators, FormControl } from '@angular/forms';
+
+@Component({
+  selector: 'app-form',
+  templateUrl: './form.component.html',
+})
+export class FormComponent {
+
+  profileForm: FormGroup;
+  outsideToggle = new FormControl(true);
+
+  constructor(fb: FormBuilder) {
+    this.profileForm = fb.group({
+      datetime: ['2010-08-20', Validators.required],
+      select: [undefined, Validators.required],
+      toggle: [false],
+      input: ['', Validators.required],
+      input2: ['Default Value'],
+      checkbox: [false],
+      range: [20, Validators.min(10)],
+    }, {updateOn: 'blur'});
+  }
+
+  setValues() {
+    this.profileForm.patchValue({
+      datetime: '2010-08-20',
+      setValue: 'nes',
+      toggle: true,
+      input: 'Some value',
+      input2: 'Another values',
+      checkbox: true,
+      range: 50
+    });
+  }
+
+}

angular/test/test-app/src/app/home-page/home-page.component.html

@@ -12,6 +12,11 @@
           Inputs test
         </ion-label>
       </ion-item>
+      <ion-item routerLink="/form">
+        <ion-label>
+          Form test
+        </ion-label>
+      </ion-item>
       <ion-item routerLink="/modals">
         <ion-label>
           Modals test

core/src/components/checkbox/checkbox.tsx

@@ -15,6 +15,7 @@ import { createColorClasses, hostContext } from '../../utils/theme';
 export class Checkbox implements ComponentInterface {
 
   private inputId = `ion-cb-${checkboxIds++}`;
+  private buttonEl?: HTMLElement;
 
   @Element() el!: HTMLElement;
 
@@ -98,9 +99,16 @@ export class Checkbox implements ComponentInterface {
 
   @Listen('click')
   onClick() {
+    this.setFocus();
     this.checked = !this.checked;
   }
 
+  private setFocus() {
+    if (this.buttonEl) {
+      this.buttonEl.focus();
+    }
+  }
+
   private onFocus = () => {
     this.ionFocus.emit();
   }
@@ -146,6 +154,7 @@ export class Checkbox implements ComponentInterface {
         onFocus={this.onFocus}
         onBlur={this.onBlur}
         disabled={this.disabled}
+        ref={el => this.buttonEl = el}
       >
       </button>
     ];

core/src/components/datetime/datetime.tsx

@@ -246,6 +246,7 @@ export class Datetime implements ComponentInterface {
 
   @Listen('click')
   onClick() {
+    this.setFocus();
     this.open();
   }
 

core/src/components/input/input.md.vars.scss

@@ -8,13 +8,13 @@
 $input-md-font-size:                      inherit !default;
 
 /// @prop - Margin top of the input
-$input-md-padding-top:                     $item-md-padding-top !default;
+$input-md-padding-top:                     10px !default;
 
 /// @prop - Margin end of the input
 $input-md-padding-end:                     0 !default;
 
 /// @prop - Margin bottom of the input
-$input-md-padding-bottom:                  $item-md-padding-bottom !default;
+$input-md-padding-bottom:                  10px !default;
 
 /// @prop - Margin start of the input
 $input-md-padding-start:                   ($item-md-padding-start / 2) !default;

core/src/components/item/item.scss

@@ -284,16 +284,21 @@ button, a {
 // Item Input Focused
 // --------------------------------------------------
 
-:host(.item-interactive.item-has-focus) {
-  --highlight-background: var(--highlight-color-focused);
-
+:host(.item-interactive.item-has-focus),
+:host(.item-interactive.ion-touched.ion-invalid) {
   // If the item has a full border and highlight is enabled, show the full item highlight
   --full-highlight-height: #{calc(var(--highlight-height) * var(--show-full-highlight))};
 
   // If the item has an inset border and highlight is enabled, show the inset item highlight
   --inset-highlight-height: #{calc(var(--highlight-height) * var(--show-inset-highlight))};
 }
 
+// Item Input Focus
+// --------------------------------------------------
+
+:host(.item-interactive.item-has-focus) {
+  --highlight-background: var(--highlight-color-focused);
+}
 
 // Item Input Valid
 // --------------------------------------------------
@@ -302,7 +307,6 @@ button, a {
   --highlight-background: var(--highlight-color-valid);
 }
 
-
 // Item Input Invalid
 // --------------------------------------------------