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feat(select): add wrapper and bottom shadow parts #30951

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eff9506
feat(select): add wrapper and bottom shadow parts
thetaPC Feb 9, 2026
10f2a34
chore(select): run build
thetaPC Feb 9, 2026
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3 changes: 3 additions & 0 deletions core/api.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -1757,6 +1757,7 @@ ion-select,css-prop,--placeholder-opacity,ios
ion-select,css-prop,--placeholder-opacity,md
ion-select,css-prop,--ripple-color,ios
ion-select,css-prop,--ripple-color,md
ion-select,part,bottom
ion-select,part,container
ion-select,part,error-text
ion-select,part,helper-text
Expand All @@ -1765,6 +1766,8 @@ ion-select,part,label
ion-select,part,placeholder
ion-select,part,supporting-text
ion-select,part,text
ion-select,part,wrapper
ion-select,part,wrapper-inner

ion-select-modal,scoped
ion-select-modal,prop,cancelText,string,'Close',false,false
Expand Down
13 changes: 10 additions & 3 deletions core/src/components/select/select.tsx
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Expand Up @@ -45,6 +45,9 @@ import type { SelectChangeEventDetail, SelectInterface, SelectCompareFn } from '
* @part supporting-text - Supporting text displayed beneath the select.
* @part helper-text - Supporting text displayed beneath the select when the select is valid.
* @part error-text - Supporting text displayed beneath the select when the select is invalid and touched.
* @part bottom - The container element for helper text, error text, and counter.
* @part wrapper - The clickable label element that wraps the entire form field (label text, slots, selected values or placeholder, and toggle icons).
* @part wrapper-inner - The inner element of the wrapper that does not include the label text.
*/
@Component({
tag: 'ion-select',
Expand Down Expand Up @@ -1173,7 +1176,11 @@ export class Select implements ComponentInterface {
return;
}

return <div class="select-bottom">{this.renderHintText()}</div>;
return (
<div class="select-bottom" part="bottom">
{this.renderHintText()}
</div>
);
}

render() {
Expand Down Expand Up @@ -1246,9 +1253,9 @@ export class Select implements ComponentInterface {
[`select-label-placement-${labelPlacement}`]: true,
})}
>
<label class="select-wrapper" id="select-label" onClick={this.onLabelClick}>
<label class="select-wrapper" id="select-label" onClick={this.onLabelClick} part="wrapper">
{this.renderLabelContainer()}
<div class="select-wrapper-inner">
<div class="select-wrapper-inner" part="wrapper-inner">
<slot name="start"></slot>
<div class="native-wrapper" ref={(el) => (this.nativeWrapperEl = el)} part="container">
{this.renderSelectText()}
Expand Down
51 changes: 51 additions & 0 deletions core/src/components/select/test/custom/select.e2e.ts
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Expand Up @@ -73,6 +73,57 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
await expect(wrapper).toHaveScreenshot(screenshot(`select-custom-parts-diff`));
});

test('should be able to customize wrapper and bottom using css parts', async ({ page }) => {
test.info().annotations.push({
type: 'issue',
description: 'https://github.com/ionic-team/ionic-framework/issues/29918',
});

await page.setContent(
`
<style>
ion-select::part(wrapper) {
background-color: red;
}

ion-select::part(wrapper-inner) {
background-color: orange;
}

ion-select::part(bottom) {
background-color: green;
}
</style>

<ion-select label="Select" label-placement="stacked" placeholder="Fruits" helper-text="Helper text">
<ion-select-option value="a">Apple</ion-select-option>
</ion-select>
`,
config
);

const select = page.locator('ion-select');
const wrapper = select.locator('.select-wrapper');
const wrapperInner = select.locator('.select-wrapper-inner');
const bottom = select.locator('.select-bottom');

const wrapperBackgroundColor = await wrapper.evaluate((el) => {
return window.getComputedStyle(el).backgroundColor;
});

const wrapperInnerBackgroundColor = await wrapperInner.evaluate((el) => {
return window.getComputedStyle(el).backgroundColor;
});

const bottomBackgroundColor = await bottom.evaluate((el) => {
return window.getComputedStyle(el).backgroundColor;
});

expect(wrapperBackgroundColor).toBe('rgb(255, 0, 0)');
expect(wrapperInnerBackgroundColor).toBe('rgb(255, 165, 0)');
expect(bottomBackgroundColor).toBe('rgb(0, 128, 0)');
});

test('should render custom cancel text when prop is provided with alert interface', async ({ page }) => {
await page.setContent(
`
Expand Down
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