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

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

@@ -284,9 +284,8 @@ 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))};
 
@@ -294,6 +293,12 @@ button, a {
   --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
 // --------------------------------------------------
 

core/src/components/range/range.tsx

@@ -1,4 +1,4 @@
-import { Component, ComponentInterface, Element, Event, EventEmitter, Prop, QueueApi, State, Watch } from '@stencil/core';
+import { Component, ComponentInterface, Element, Event, EventEmitter, Listen, Prop, QueueApi, State, Watch } from '@stencil/core';
 
 import { Color, Gesture, GestureDetail, KnobName, Mode, RangeChangeEventDetail, RangeValue, StyleEventDetail } from '../../interface';
 import { clamp, debounceEvent } from '../../utils/helpers';
@@ -145,6 +145,24 @@ export class Range implements ComponentInterface {
    */
   @Event() ionBlur!: EventEmitter<void>;
 
+  @Listen('focusout')
+  onBlur() {
+    if (this.hasFocus) {
+      this.hasFocus = false;
+      this.ionBlur.emit();
+      this.emitStyle();
+    }
+  }
+
+  @Listen('focusin')
+  onFocus() {
+    if (!this.hasFocus) {
+      this.hasFocus = true;
+      this.ionFocus.emit();
+      this.emitStyle();
+    }
+  }
+
   componentWillLoad() {
     this.updateRatio();
     this.debounceChanged();
@@ -165,7 +183,7 @@ export class Range implements ComponentInterface {
     this.gesture.setDisabled(this.disabled);
   }
 
-  private handleKeyboard = (knob: string, isIncrease: boolean) => {
+  private handleKeyboard = (knob: KnobName, isIncrease: boolean) => {
     let step = this.step;
     step = step > 0 ? step : 1;
     step = step / (this.max - this.min);
@@ -200,29 +218,12 @@ export class Range implements ComponentInterface {
 
   private emitStyle() {
     this.ionStyle.emit({
+      'interactive': true,
       'interactive-disabled': this.disabled
     });
   }
 
-  private fireBlur() {
-    if (this.hasFocus) {
-      this.hasFocus = false;
-      this.ionBlur.emit();
-      this.emitStyle();
-    }
-  }
-
-  private fireFocus() {
-    if (!this.hasFocus) {
-      this.hasFocus = true;
-      this.ionFocus.emit();
-      this.emitStyle();
-    }
-  }
-
   private onStart(detail: GestureDetail) {
-    this.fireFocus();
-
     const rect = this.rect = this.rangeSlider!.getBoundingClientRect() as any;
     const currentX = detail.currentX;
 
@@ -234,6 +235,8 @@ export class Range implements ComponentInterface {
         ? 'A'
         : 'B';
 
+    this.setFocus(this.pressedKnob);
+
     // update the active knob's position
     this.update(currentX);
   }
@@ -245,7 +248,6 @@ export class Range implements ComponentInterface {
   private onEnd(detail: GestureDetail) {
     this.update(detail.currentX);
     this.pressedKnob = undefined;
-    this.fireBlur();
   }
 
   private update(currentX: number) {
@@ -255,8 +257,11 @@ export class Range implements ComponentInterface {
     let ratio = clamp(0, (currentX - rect.left) / rect.width, 1);
     if (this.snaps) {
       // snaps the ratio to the current value
-      const value = ratioToValue(ratio, this.min, this.max, this.step);
-      ratio = valueToRatio(value, this.min, this.max);
+      ratio = valueToRatio(
+        ratioToValue(ratio, this.min, this.max, this.step),
+        this.min,
+        this.max
+      );
     }
 
     // update which knob is pressed
@@ -317,6 +322,15 @@ export class Range implements ComponentInterface {
     this.noUpdate = false;
   }
 
+  private setFocus(knob: KnobName) {
+    if (this.el.shadowRoot) {
+      const knobEl = this.el.shadowRoot.querySelector(knob === 'A' ? '.range-knob-a' : '.range-knob-b') as HTMLElement | undefined;
+      if (knobEl) {
+        knobEl.focus();
+      }
+    }
+  }
+
   hostData() {
     return {
       class: {
@@ -401,7 +415,7 @@ export class Range implements ComponentInterface {
 }
 
 interface RangeKnob {
-  knob: string;
+  knob: KnobName;
   value: number;
   ratio: number;
   min: number;
@@ -410,7 +424,7 @@ interface RangeKnob {
   pressed: boolean;
   pin: boolean;
 
-  handleKeyboard: (name: string, isIncrease: boolean) => void;
+  handleKeyboard: (name: KnobName, isIncrease: boolean) => void;
 }
 
 function renderKnob({ knob, value, ratio, min, max, disabled, pressed, pin, handleKeyboard }: RangeKnob) {
@@ -431,6 +445,8 @@ function renderKnob({ knob, value, ratio, min, max, disabled, pressed, pin, hand
       }}
       class={{
         'range-knob-handle': true,
+        'range-knob-a': knob === 'A',
+        'range-knob-b': knob === 'B',
         'range-knob-pressed': pressed,
         'range-knob-min': value === min,
         'range-knob-max': value === max

core/src/components/select/select.tsx

@@ -140,6 +140,7 @@ export class Select implements ComponentInterface {
 
   @Listen('click')
   onClick(ev: UIEvent) {
+    this.setFocus();
     this.open(ev);
   }
 

core/src/components/toggle/toggle.tsx

@@ -16,8 +16,9 @@ import { createColorClasses, hostContext } from '../../utils/theme';
 export class Toggle implements ComponentInterface {
 
   private inputId = `ion-tg-${toggleIds++}`;
-  private pivotX = 0;
   private gesture?: Gesture;
+  private buttonEl?: HTMLElement;
+  private lastDrag = 0;
 
   @Element() el!: HTMLElement;
 
@@ -108,8 +109,9 @@ export class Toggle implements ComponentInterface {
       queue: this.queue,
       gestureName: 'toggle',
       gesturePriority: 100,
-      threshold: 0,
-      onStart: ev => this.onStart(ev),
+      threshold: 5,
+      passive: false,
+      onStart: () => this.onStart(),
       onMove: ev => this.onMove(ev),
       onEnd: ev => this.onEnd(ev),
     });
@@ -118,7 +120,9 @@ export class Toggle implements ComponentInterface {
 
   @Listen('click')
   onClick() {
-    this.checked = !this.checked;
+    if (this.lastDrag + 300 < Date.now()) {
+      this.checked = !this.checked;
+    }
   }
 
   private emitStyle() {
@@ -127,38 +131,37 @@ export class Toggle implements ComponentInterface {
     });
   }
 
-  private onStart(detail: GestureDetail) {
-    this.pivotX = detail.currentX;
+  private onStart() {
     this.activated = true;
 
     // touch-action does not work in iOS
-    detail.event.preventDefault();
-    return true;
+    this.setFocus();
   }
 
   private onMove(detail: GestureDetail) {
-    const currentX = detail.currentX;
-    if (shouldToggle(this.checked, currentX - this.pivotX, -15)) {
+    if (shouldToggle(this.checked, detail.deltaX, -10)) {
       this.checked = !this.checked;
-      this.pivotX = currentX;
       hapticSelection();
     }
   }
 
-  private onEnd(detail: GestureDetail) {
-    const delta = detail.currentX - this.pivotX;
-    if (shouldToggle(this.checked, delta, 4)) {
-      this.checked = !this.checked;
-      hapticSelection();
-    }
-
+  private onEnd(ev: GestureDetail) {
     this.activated = false;
+    this.lastDrag = Date.now();
+    ev.event.preventDefault();
+    ev.event.stopImmediatePropagation();
   }
 
   private getValue() {
     return this.value || '';
   }
 
+  private setFocus() {
+    if (this.buttonEl) {
+      this.buttonEl.focus();
+    }
+  }
+
   private onFocus = () => {
     this.ionFocus.emit();
   }
@@ -205,6 +208,7 @@ export class Toggle implements ComponentInterface {
         onFocus={this.onFocus}
         onBlur={this.onBlur}
         disabled={this.disabled}
+        ref={el => this.buttonEl = el}
       >
       </button>
     ];

core/src/utils/tap-click.ts

@@ -5,7 +5,6 @@ import { now, pointerCoord } from './helpers';
 export function startTapClick(doc: Document, config: Config) {
   let lastTouch = -MOUSE_WAIT * 10;
   let lastActivated = 0;
-  let cancelled = false;
   let scrollingEl: HTMLElement | undefined;
 
   let activatableEle: HTMLElement | undefined;
@@ -51,11 +50,9 @@ export function startTapClick(doc: Document, config: Config) {
       removeActivated(false);
       activatableEle = undefined;
     }
-    cancelled = true;
   }
 
   function pointerDown(ev: any) {
-    cancelled = false;
     if (activatableEle || isScrolling()) {
       return;
     }
@@ -64,13 +61,7 @@ export function startTapClick(doc: Document, config: Config) {
   }
 
   function pointerUp(ev: UIEvent) {
-    if (isScrolling()) {
-      return;
-    }
     setActivatedElement(undefined, ev);
-    if (cancelled && ev.cancelable) {
-      ev.preventDefault();
-    }
   }
 
   function setActivatedElement(el: HTMLElement | undefined, ev: UIEvent) {