feat(range): add label prop (#27408)

Issue number: N/A

---------

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issue. -->

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etc). Submit multiple pull requests if needed. -->

## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

Labels on `ion-range` can only be set via the `label` slot. When only
plain text is needed, this is cumbersome because you need to add an
entire new element to wrap the label.

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

Label prop added. If both the prop and slot are used, the prop will take
priority.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

<!-- If this introduces a breaking change, please describe the impact
and migration path for existing applications below. -->


## Other information

<!-- Any other information that is important to this PR such as
screenshots of how the component looks before and after the change. -->

- Docs PR: ionic-team/ionic-docs#2955
- Dev build: `7.0.6-dev.11683657201.139d03f4`

Author: averyjohnston

angular/src/directives/proxies.ts

@@ -1619,14 +1619,14 @@ export declare interface IonRadioGroup extends Components.IonRadioGroup {
 
 
 @ProxyCmp({
-  inputs: ['activeBarStart', 'color', 'debounce', 'disabled', 'dualKnobs', 'labelPlacement', 'legacy', 'max', 'min', 'mode', 'name', 'pin', 'pinFormatter', 'snaps', 'step', 'ticks', 'value']
+  inputs: ['activeBarStart', 'color', 'debounce', 'disabled', 'dualKnobs', 'label', 'labelPlacement', 'legacy', 'max', 'min', 'mode', 'name', 'pin', 'pinFormatter', 'snaps', 'step', 'ticks', 'value']
 })
 @Component({
   selector: 'ion-range',
   changeDetection: ChangeDetectionStrategy.OnPush,
   template: '<ng-content></ng-content>',
   // eslint-disable-next-line @angular-eslint/no-inputs-metadata-property
-  inputs: ['activeBarStart', 'color', 'debounce', 'disabled', 'dualKnobs', 'labelPlacement', 'legacy', 'max', 'min', 'mode', 'name', 'pin', 'pinFormatter', 'snaps', 'step', 'ticks', 'value'],
+  inputs: ['activeBarStart', 'color', 'debounce', 'disabled', 'dualKnobs', 'label', 'labelPlacement', 'legacy', 'max', 'min', 'mode', 'name', 'pin', 'pinFormatter', 'snaps', 'step', 'ticks', 'value'],
 })
 export class IonRange {
   protected el: HTMLElement;

core/api.txt

@@ -1030,6 +1030,7 @@ ion-range,prop,color,"danger" | "dark" | "light" | "medium" | "primary" | "secon
 ion-range,prop,debounce,number | undefined,undefined,false,false
 ion-range,prop,disabled,boolean,false,false,false
 ion-range,prop,dualKnobs,boolean,false,false,false
+ion-range,prop,label,string | undefined,undefined,false,false
 ion-range,prop,labelPlacement,"end" | "fixed" | "start",'start',false,false
 ion-range,prop,legacy,boolean | undefined,undefined,false,false
 ion-range,prop,max,number,100,false,false

core/src/components.d.ts

@@ -2289,6 +2289,10 @@ export namespace Components {
           * Show two knobs.
          */
         "dualKnobs": boolean;
+        /**
+          * The text to display as the control's label. Use this over the `label` slot if you only need plain text. The `label` property will take priority over the `label` slot if both are used.
+         */
+        "label"?: string;
         /**
           * Where to place the label relative to the range. `"start"`: The label will appear to the left of the range in LTR and to the right in RTL. `"end"`: The label will appear to the right of the range in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
          */
@@ -6304,6 +6308,10 @@ declare namespace LocalJSX {
           * Show two knobs.
          */
         "dualKnobs"?: boolean;
+        /**
+          * The text to display as the control's label. Use this over the `label` slot if you only need plain text. The `label` property will take priority over the `label` slot if both are used.
+         */
+        "label"?: string;
         /**
           * Where to place the label relative to the range. `"start"`: The label will appear to the left of the range in LTR and to the right in RTL. `"end"`: The label will appear to the right of the range in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
          */

core/src/components/range/range.md.scss

@@ -22,8 +22,7 @@
   font-size: $range-md-pin-font-size;
 }
 
-// TODO FW-2997 Remove this
-::slotted([slot="label"]) {
+::slotted([slot="label"]), .label-text {
   font-size: initial;
 }
 

core/src/components/range/range.scss

@@ -209,7 +209,7 @@
   opacity: 0.3;
 }
 
-::slotted([slot="label"]) {
+::slotted([slot="label"]), .label-text {
   /**
    * Label text should not extend
    * beyond the bounds of the range.

core/src/components/range/range.tsx

@@ -96,6 +96,13 @@ export class Range implements ComponentInterface {
    */
   @Prop() name = this.rangeId;
 
+  /**
+   * The text to display as the control's label. Use this over the `label` slot if
+   * you only need plain text. The `label` property will take priority over the
+   * `label` slot if both are used.
+   */
+  @Prop() label?: string;
+
   /**
    * Show two knobs.
    */
@@ -602,7 +609,7 @@ Developers can dismiss this warning by removing their usage of the "legacy" prop
   }
 
   private renderRange() {
-    const { disabled, el, rangeId, pin, pressedKnob, labelPlacement } = this;
+    const { disabled, el, rangeId, pin, pressedKnob, labelPlacement, label } = this;
 
     const mode = getIonMode(this);
 
@@ -629,7 +636,7 @@ Developers can dismiss this warning by removing their usage of the "legacy" prop
               'label-text-wrapper-hidden': !this.hasLabel,
             }}
           >
-            <slot name="label"></slot>
+            {label !== undefined ? <div class="label-text">{label}</div> : <slot name="label"></slot>}
           </div>
           <div class="native-wrapper">
             <slot name="start"></slot>
@@ -642,7 +649,7 @@ Developers can dismiss this warning by removing their usage of the "legacy" prop
   }
 
   private get hasLabel() {
-    return this.el.querySelector('[slot="label"]') !== null;
+    return this.label !== undefined || this.el.querySelector('[slot="label"]') !== null;
   }
 
   private renderRangeSlider() {

core/src/components/range/test/a11y/index.html

@@ -15,14 +15,18 @@
     <main>
       <h1>Range - a11y</h1>
 
-      <ion-range><span slot="label">my label</span></ion-range
-      ><br />
-      <ion-range aria-label="my aria label"></ion-range><br />
+      <ion-range><span slot="label">my label</span></ion-range>
+      <br />
+      <ion-range label="my label"></ion-range>
+      <br />
+      <ion-range aria-label="my aria label"></ion-range>
+      <br />
       <ion-range>
         <span slot="label">temperature</span>
         <ion-icon name="snow" slot="start" aria-hidden="true"></ion-icon>
-        <ion-icon name="flame" slot="end" aria-hidden="true"></ion-icon> </ion-range
-      ><br />
+        <ion-icon name="flame" slot="end" aria-hidden="true"></ion-icon>
+      </ion-range>
+      <br />
     </main>
   </body>
 </html>

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

@@ -67,6 +67,22 @@ <h2>Placement Fixed</h2>
           </div>
         </div>
 
+        <h1>Label Property</h1>
+        <div class="grid">
+          <div class="grid-item">
+            <h2>Placement Start</h2>
+            <ion-range label="Temperature"></ion-range>
+          </div>
+          <div class="grid-item">
+            <h2>Placement End</h2>
+            <ion-range label="Temperature" label-placement="end"></ion-range>
+          </div>
+          <div class="grid-item">
+            <h2>Placement Fixed</h2>
+            <ion-range label="Temperature" label-placement="fixed"></ion-range>
+          </div>
+        </div>
+
         <h1>Slotted Items</h1>
         <div class="grid">
           <div class="grid-item">

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

@@ -125,6 +125,32 @@ configs().forEach(({ title, screenshot, config }) => {
         expect(await range.screenshot()).toMatchSnapshot(screenshot(`range-items-fixed`));
       });
     });
+
+    test.describe('range: label prop', () => {
+      test('should render label in the start placement', async ({ page }) => {
+        await page.setContent(`<ion-range label-placement="start" label="Volume"></ion-range>`, config);
+
+        const range = page.locator('ion-range');
+
+        expect(await range.screenshot()).toMatchSnapshot(screenshot(`range-label-prop-start`));
+      });
+
+      test('should render label in the end placement', async ({ page }) => {
+        await page.setContent(`<ion-range label-placement="end" label="Volume"></ion-range>`, config);
+
+        const range = page.locator('ion-range');
+
+        expect(await range.screenshot()).toMatchSnapshot(screenshot(`range-label-prop-end`));
+      });
+
+      test('should render label in the fixed placement', async ({ page }) => {
+        await page.setContent(`<ion-range label-placement="fixed" label="Volume"></ion-range>`, config);
+
+        const range = page.locator('ion-range');
+
+        expect(await range.screenshot()).toMatchSnapshot(screenshot(`range-label-prop-fixed`));
+      });
+    });
   });
 });
 

core/src/components/range/test/label/range.e2e.ts-snapshots/range-label-prop-end-ios-ltr-Mobile-Chrome-linux.png

@@ -0,0 +1,23 @@
+import { newSpecPage } from '@stencil/core/testing';
+
+import { Range } from '../../range';
+
+describe('range: label', () => {
+  it('should prioritize the label prop over the slot', async () => {
+    const page = await newSpecPage({
+      components: [Range],
+      html: `
+        <ion-range label="Label prop">
+          <div slot="label">Label slot</div>
+        </ion-range>
+      `,
+    });
+
+    const range = page.body.querySelector('ion-range');
+    const propEl = range?.shadowRoot?.querySelector('.label-text');
+    const slotEl = range?.shadowRoot?.querySelector('slot[name="label"]');
+
+    expect(propEl).not.toBeNull();
+    expect(slotEl).toBeNull();
+  });
+});

core/src/components/range/test/label/range.e2e.ts-snapshots/range-label-prop-end-ios-ltr-Mobile-Firefox-linux.png

@@ -606,6 +606,7 @@ export const IonRange = /*@__PURE__*/ defineContainer<JSX.IonRange, JSX.IonRange
   'color',
   'debounce',
   'name',
+  'label',
   'dualKnobs',
   'min',
   'max',