feat(range): add knobMoveStart and knobMoveEnd events (#25011)

angular/src/directives/proxies.ts

@@ -1272,6 +1272,8 @@ export class IonRadioGroup {
 }
 
 import type { RangeChangeEventDetail as IRangeRangeChangeEventDetail } from '@ionic/core';
+import type { RangeKnobMoveStartEventDetail as IRangeRangeKnobMoveStartEventDetail } from '@ionic/core';
+import type { RangeKnobMoveEndEventDetail as IRangeRangeKnobMoveEndEventDetail } from '@ionic/core';
 export declare interface IonRange extends Components.IonRange {
   /**
    * Emitted when the value property has changed. 
@@ -1285,6 +1287,16 @@ export declare interface IonRange extends Components.IonRange {
    * Emitted when the range loses focus. 
    */
   ionBlur: EventEmitter<CustomEvent<void>>;
+  /**
+   * Emitted when the user starts moving the range knob, whether through
+mouse drag, touch gesture, or keyboard interaction. 
+   */
+  ionKnobMoveStart: EventEmitter<CustomEvent<IRangeRangeKnobMoveStartEventDetail>>;
+  /**
+   * Emitted when the user finishes moving the range knob, whether through
+mouse drag, touch gesture, or keyboard interaction. 
+   */
+  ionKnobMoveEnd: EventEmitter<CustomEvent<IRangeRangeKnobMoveEndEventDetail>>;
 
 }
 
@@ -1303,7 +1315,7 @@ export class IonRange {
   constructor(c: ChangeDetectorRef, r: ElementRef, protected z: NgZone) {
     c.detach();
     this.el = r.nativeElement;
-    proxyOutputs(this, this.el, ['ionChange', 'ionFocus', 'ionBlur']);
+    proxyOutputs(this, this.el, ['ionChange', 'ionFocus', 'ionBlur', 'ionKnobMoveStart', 'ionKnobMoveEnd']);
   }
 }
 

core/api.txt

@@ -984,6 +984,8 @@ ion-range,prop,value,number | { lower: number; upper: number; },0,false,false
 ion-range,event,ionBlur,void,true
 ion-range,event,ionChange,RangeChangeEventDetail,true
 ion-range,event,ionFocus,void,true
+ion-range,event,ionKnobMoveEnd,RangeKnobMoveEndEventDetail,true
+ion-range,event,ionKnobMoveStart,RangeKnobMoveStartEventDetail,true
 ion-range,css-prop,--bar-background
 ion-range,css-prop,--bar-background-active
 ion-range,css-prop,--bar-border-radius

core/src/components.d.ts

@@ -5,7 +5,7 @@
  * It contains typing information for all components that exist in this project.
  */
 import { HTMLStencilElement, JSXBase } from "@stencil/core/internal";
-import { AccordionGroupChangeEventDetail, ActionSheetAttributes, ActionSheetButton, AlertButton, AlertInput, AnimationBuilder, AutocompleteTypes, BreadcrumbCollapsedClickEventDetail, CheckboxChangeEventDetail, Color, ComponentProps, ComponentRef, DatetimeChangeEventDetail, DomRenderFn, FooterHeightFn, FrameworkDelegate, HeaderFn, HeaderHeightFn, InputChangeEventDetail, ItemHeightFn, ItemRenderFn, ItemReorderEventDetail, LoadingAttributes, MenuChangeEventDetail, ModalAttributes, ModalBreakpointChangeEventDetail, NavComponent, NavComponentWithProps, NavOptions, OverlayEventDetail, PickerAttributes, PickerButton, PickerColumn, PopoverAttributes, PopoverSize, PositionAlign, PositionReference, PositionSide, RadioGroupChangeEventDetail, RangeChangeEventDetail, RangeValue, RefresherEventDetail, RouteID, RouterDirection, RouterEventDetail, RouterOutletOptions, RouteWrite, ScrollBaseDetail, ScrollDetail, SearchbarChangeEventDetail, SegmentButtonLayout, SegmentChangeEventDetail, SelectChangeEventDetail, SelectInterface, SelectPopoverOption, Side, SpinnerTypes, StyleEventDetail, SwipeGestureHandler, TabBarChangedEventDetail, TabButtonClickEventDetail, TabButtonLayout, TextareaChangeEventDetail, TextFieldTypes, ToastButton, ToggleChangeEventDetail, TransitionDoneFn, TransitionInstruction, TriggerAction, ViewController } from "./interface";
+import { AccordionGroupChangeEventDetail, ActionSheetAttributes, ActionSheetButton, AlertButton, AlertInput, AnimationBuilder, AutocompleteTypes, BreadcrumbCollapsedClickEventDetail, CheckboxChangeEventDetail, Color, ComponentProps, ComponentRef, DatetimeChangeEventDetail, DomRenderFn, FooterHeightFn, FrameworkDelegate, HeaderFn, HeaderHeightFn, InputChangeEventDetail, ItemHeightFn, ItemRenderFn, ItemReorderEventDetail, LoadingAttributes, MenuChangeEventDetail, ModalAttributes, ModalBreakpointChangeEventDetail, NavComponent, NavComponentWithProps, NavOptions, OverlayEventDetail, PickerAttributes, PickerButton, PickerColumn, PopoverAttributes, PopoverSize, PositionAlign, PositionReference, PositionSide, RadioGroupChangeEventDetail, RangeChangeEventDetail, RangeKnobMoveEndEventDetail, RangeKnobMoveStartEventDetail, RangeValue, RefresherEventDetail, RouteID, RouterDirection, RouterEventDetail, RouterOutletOptions, RouteWrite, ScrollBaseDetail, ScrollDetail, SearchbarChangeEventDetail, SegmentButtonLayout, SegmentChangeEventDetail, SelectChangeEventDetail, SelectInterface, SelectPopoverOption, Side, SpinnerTypes, StyleEventDetail, SwipeGestureHandler, TabBarChangedEventDetail, TabButtonClickEventDetail, TabButtonLayout, TextareaChangeEventDetail, TextFieldTypes, ToastButton, ToggleChangeEventDetail, TransitionDoneFn, TransitionInstruction, TriggerAction, ViewController } from "./interface";
 import { IonicSafeString } from "./utils/sanitization";
 import { AlertAttributes } from "./components/alert/alert-interface";
 import { CounterFormatter } from "./components/item/item-interface";
@@ -5771,6 +5771,14 @@ declare namespace LocalJSX {
           * Emitted when the range has focus.
          */
         "onIonFocus"?: (event: CustomEvent<void>) => void;
+        /**
+          * Emitted when the user finishes moving the range knob, whether through mouse drag, touch gesture, or keyboard interaction.
+         */
+        "onIonKnobMoveEnd"?: (event: CustomEvent<RangeKnobMoveEndEventDetail>) => void;
+        /**
+          * Emitted when the user starts moving the range knob, whether through mouse drag, touch gesture, or keyboard interaction.
+         */
+        "onIonKnobMoveStart"?: (event: CustomEvent<RangeKnobMoveStartEventDetail>) => void;
         /**
           * Emitted when the styles change.
          */

core/src/components/range/range-interface.ts

@@ -8,7 +8,15 @@ export interface RangeChangeEventDetail {
   value: RangeValue;
 }
 
+export interface RangeKnobMoveStartEventDetail {
+  value: RangeValue;
+}
+
+export interface RangeKnobMoveEndEventDetail {
+  value: RangeValue;
+}
+
 export interface RangeCustomEvent extends CustomEvent {
-  detail: RangeChangeEventDetail;
+  detail: RangeChangeEventDetail | RangeKnobMoveStartEventDetail | RangeKnobMoveEndEventDetail;
   target: HTMLIonRangeElement;
 }

core/src/components/range/range.tsx

@@ -1,7 +1,7 @@
 import { Component, ComponentInterface, Element, Event, EventEmitter, Host, Prop, State, Watch, h } from '@stencil/core';
 
 import { getIonMode } from '../../global/ionic-global';
-import { Color, Gesture, GestureDetail, KnobName, RangeChangeEventDetail, RangeValue, StyleEventDetail } from '../../interface';
+import { Color, Gesture, GestureDetail, KnobName, RangeChangeEventDetail, RangeKnobMoveEndEventDetail, RangeKnobMoveStartEventDetail, RangeValue, StyleEventDetail } from '../../interface';
 import { Attributes, clamp, debounceEvent, getAriaLabel, inheritAttributes, renderHiddenInput } from '../../utils/helpers';
 import { isRTL } from '../../utils/rtl';
 import { createColorClasses, hostContext } from '../../utils/theme';
@@ -191,6 +191,18 @@ export class Range implements ComponentInterface {
    */
   @Event() ionBlur!: EventEmitter<void>;
 
+  /**
+   * Emitted when the user starts moving the range knob, whether through
+   * mouse drag, touch gesture, or keyboard interaction.
+   */
+  @Event() ionKnobMoveStart!: EventEmitter<RangeKnobMoveStartEventDetail>;
+
+  /**
+   * Emitted when the user finishes moving the range knob, whether through
+   * mouse drag, touch gesture, or keyboard interaction.
+   */
+  @Event() ionKnobMoveEnd!: EventEmitter<RangeKnobMoveEndEventDetail>;
+
   private setupGesture = async () => {
     const rangeSlider = this.rangeSlider;
     if (rangeSlider) {
@@ -246,6 +258,8 @@ export class Range implements ComponentInterface {
   }
 
   private handleKeyboard = (knob: KnobName, isIncrease: boolean) => {
+    const { ensureValueInBounds } = this;
+
     let step = this.step;
     step = step > 0 ? step : 1;
     step = step / (this.max - this.min);
@@ -257,7 +271,10 @@ export class Range implements ComponentInterface {
     } else {
       this.ratioB = clamp(0, this.ratioB + step, 1);
     }
+
+    this.ionKnobMoveStart.emit({ value: ensureValueInBounds(this.value) });
     this.updateValue();
+    this.ionKnobMoveEnd.emit({ value: ensureValueInBounds(this.value) });
   }
 
   private getValue(): RangeValue {
@@ -305,6 +322,8 @@ export class Range implements ComponentInterface {
 
     // update the active knob's position
     this.update(currentX);
+
+    this.ionKnobMoveStart.emit({ value: this.ensureValueInBounds(this.value) });
   }
 
   private onMove(detail: GestureDetail) {
@@ -314,6 +333,8 @@ export class Range implements ComponentInterface {
   private onEnd(detail: GestureDetail) {
     this.update(detail.currentX);
     this.pressedKnob = undefined;
+
+    this.ionKnobMoveEnd.emit({ value: this.ensureValueInBounds(this.value) });
   }
 
   private update(currentX: number) {

core/src/components/range/readme.md

@@ -25,6 +25,22 @@ interface RangeChangeEventDetail {
 }
 ```
 
+### RangeKnobMoveStartEventDetail
+
+```typescript
+interface RangeKnobMoveStartEventDetail {
+  value: RangeValue;
+}
+```
+
+### RangeKnobMoveEndEventDetail
+
+```typescript
+interface RangeKnobMoveEndEventDetail {
+  value: RangeValue;
+}
+```
+
 ### RangeCustomEvent
 
 While not required, this interface can be used in place of the `CustomEvent` interface for stronger typing with Ionic events emitted from this component.
@@ -369,10 +385,12 @@ export default defineComponent({
 ## Events
 
 | Event              | Description                                                                                                               | Type                                         |
-| ----------- | -------------------------------------------- | ------------------------------------- |
+| ------------------ | ------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------- |
 | `ionBlur`          | Emitted when the range loses focus.                                                                                       | `CustomEvent<void>`                          |
 | `ionChange`        | Emitted when the value property has changed.                                                                              | `CustomEvent<RangeChangeEventDetail>`        |
 | `ionFocus`         | Emitted when the range has focus.                                                                                         | `CustomEvent<void>`                          |
+| `ionKnobMoveEnd`   | Emitted when the user finishes moving the range knob, whether through mouse drag, touch gesture, or keyboard interaction. | `CustomEvent<RangeKnobMoveEndEventDetail>`   |
+| `ionKnobMoveStart` | Emitted when the user starts moving the range knob, whether through mouse drag, touch gesture, or keyboard interaction.   | `CustomEvent<RangeKnobMoveStartEventDetail>` |
 
 
 ## Slots

core/src/components/range/test/basic/e2e.ts

@@ -1,4 +1,5 @@
 import { newE2EPage } from '@stencil/core/testing';
+import { dragElementBy } from '@utils/test';
 
 test('range: basic', async () => {
   const page = await newE2EPage({
@@ -17,3 +18,45 @@ test('range:rtl: basic', async () => {
   const compare = await page.compareScreenshot();
   expect(compare).toMatchScreenshot();
 });
+
+test('range: start/end events', async () => {
+  const page = await newE2EPage({
+    url: '/src/components/range/test/basic?ionic:_testing=true'
+  });
+
+  const rangeStart = await page.spyOnEvent('ionKnobMoveStart');
+  const rangeEnd = await page.spyOnEvent('ionKnobMoveEnd');
+  const rangeEl = await page.$('#basic');
+
+  await dragElementBy(rangeEl, page, 300, 0);
+
+  /**
+   * dragElementBy defaults to starting the drag from the middle of the el,
+   * so the start value should jump to 50 despite the range defaulting to 20.
+   */
+  expect(rangeStart).toHaveReceivedEventDetail({ value: 50 });
+  expect(rangeEnd).toHaveReceivedEventDetail({ value: 91 });
+
+  /**
+   * Verify both events fire if range is clicked without dragging.
+   */
+  await dragElementBy(rangeEl, page, 0, 0);
+
+  expect(rangeStart).toHaveReceivedEventDetail({ value: 50 });
+  expect(rangeEnd).toHaveReceivedEventDetail({ value: 50 })
+});
+
+test('range: start/end events, keyboard', async () => {
+  const page = await newE2EPage({
+    url: '/src/components/range/test/basic?ionic:_testing=true'
+  });
+
+  const rangeStart = await page.spyOnEvent('ionKnobMoveStart');
+  const rangeEnd = await page.spyOnEvent('ionKnobMoveEnd');
+  
+  await page.keyboard.press('Tab'); // focus first range
+  await page.keyboard.press('ArrowRight');
+
+  expect(rangeStart).toHaveReceivedEventDetail({ value: 20 });
+  expect(rangeEnd).toHaveReceivedEventDetail({ value: 21 });
+});

core/src/components/range/test/basic/index.html

@@ -66,7 +66,7 @@
           </ion-label>
         </ion-list-header>
         <ion-item>
-          <ion-range value="20" aria-label="Default Range"></ion-range>
+          <ion-range id="basic" value="20" aria-label="Default Range"></ion-range>
         </ion-item>
         <ion-item>
           <ion-range value="60" color="light" step="10" pin="true" aria-label="Light Pin Range"></ion-range>
@@ -240,19 +240,7 @@
     knob.value = {
       lower: 33,
       upper: 60
-    }
-    knob.addEventListener('ionFocus', function (ev) {
-      console.log('focus', ev)
-    })
-    knob.addEventListener('ionBlur', function (ev) {
-      console.log('blur', ev)
-    })
-    knob.addEventListener('ionChange', function (ev) {
-      console.log('change', ev)
-    })
-    debounceRange.addEventListener('ionChange', function (ev) {
-      console.log('change', ev)
-    })
+    };
 
     function elTest() {
       var range = document.getElementById('range');

packages/vue/src/proxies.ts

@@ -591,7 +591,9 @@ export const IonRange = /*@__PURE__*/ defineContainer<JSX.IonRange>('ion-range',
   'ionChange',
   'ionStyle',
   'ionFocus',
-  'ionBlur'
+  'ionBlur',
+  'ionKnobMoveStart',
+  'ionKnobMoveEnd'
 ],
 'value', 'v-ion-change', 'ionChange');