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ionic-theme-ios26

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CSS/JavaScript Library for Ionic Framework

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# Ionic Theme iOS26

A CSS/JS theme library that applies iOS26 design system to Ionic applications.

![](https://raw.githubusercontent.com/rdlabo-team/ionic-theme-ios26/main/screenshots/ios26.png)

DEMO is here: https://ionic-theme-ios26.netlify.app/

## Overview

This library provides CSS/JS files that bring the iOS26 design system to Ionic applications. It updates the look and feel of Ionic components to match the latest iOS26 design guidelines.

I'm also working on the Android Design (Material Design 3) theme. Be sure to catch up!

👉️[rdlabo-team/ionic-theme-md3](https://github.com/rdlabo-team/ionic-theme-md3)

## 💖 Support This Project

Enjoying this library? Your support helps keep it alive and growing!  
Sponsoring means you directly contribute to new features, improvements, and maintenance.

[Become a Sponsor →](https://github.com/sponsors/rdlabo)

## Setup

This is a CSS theme for extending your Ionic project. It does not work on its own, so use it together with the Ionic Framework.

```bash
npm install @rdlabo/ionic-theme-ios26
```

Note: **If you use @ionic/core@ < 8.8.1**, use @rdlabo/ionic-theme-ios26@2.2.1.

And import the theme in your project's main CSS file (e.g., `src/styles.scss`).

```css
@import '@rdlabo/ionic-theme-ios26/dist/css/default-variables.css';
@import '@rdlabo/ionic-theme-ios26/dist/css/ionic-theme-ios26.css';

/**
 * This file is to eliminate the impact of class name changes for iOS26.
 * For example, `ion-buttons ion-button[fill=default]` is not normally implemented, but may be required for iOS26.
 * This file is to eliminate such effects.
 * Note: This is not include `@rdlabo/ionic-theme-md3`
 */
@import '@rdlabo/ionic-theme-ios26/dist/css/md-remove-ios-class-effect.css';

/**
 * If you will use the design of ion-item-group with ion-list on Android as well, import it.
 * More info: https://github.com/rdlabo-team/ionic-theme-ios26/blob/main/USING_ION_ITEM_GROUP.md
 * Note: This is include `@rdlabo/ionic-theme-md3`
 * @import '@rdlabo/ionic-theme-ios26/dist/css/md-ion-list-inset.css';
 */

/*
 * Support Dark Mode
 * We support Ionic Dark Mode. More information is here: https://ionicframework.com/docs/theming/dark-mode
 * use Always:    @import '@rdlabo/ionic-theme-ios26/dist/css/ionic-theme-ios26-dark-always.css'
 * use System:    @import '@rdlabo/ionic-theme-ios26/dist/css/ionic-theme-ios26-dark-system.css'
 * use CSS Class: @import '@rdlabo/ionic-theme-ios26/dist/css/ionic-theme-ios26-dark-class.css'
 */
```

Next, configure the animations for iOS 26. Add the following to your Ionic configuration options.

```ts
import { isPlatform } from '@ionic/core'; // or @ionic/angular/standalone, @ionic/react, @ionic/vue
import { iosTransitionAnimation, popoverEnterAnimation, popoverLeaveAnimation } from '@rdlabo/ionic-theme-ios26';

// Angular
provideIonicAngular({
    ...
    navAnimation: isPlatform('ios') ? iosTransitionAnimation: undefined,
    popoverEnter: isPlatform('ios') ? popoverEnterAnimation: undefined,
    popoverLeave: isPlatform('ios') ? popoverLeaveAnimation: undefined,
});

// React
setupIonicReact({
    ...
    navAnimation: isPlatform('ios') ? iosTransitionAnimation: undefined,
    popoverEnter: isPlatform('ios') ? popoverEnterAnimation: undefined,
    popoverLeave: isPlatform('ios') ? popoverLeaveAnimation: undefined,
});

// Vue
createApp(App)
    .use(IonicVue, {
        ...
        navAnimation: isPlatform('ios') ? iosTransitionAnimation: undefined,
        popoverEnter: isPlatform('ios') ? popoverEnterAnimation: undefined,
        popoverLeave: isPlatform('ios') ? popoverLeaveAnimation: undefined,
})
```

## Important Notes

### Using `ion-item-group`

Under specific conditions, you need to use `ion-item-group`.

```diff
  <ion-list inset=true>
    <ion-list-header><ion-label>Label</ion-label></ion-list-header>
+   <ion-item-group>
      <ion-item>...</ion-item>
      <ion-item>...</ion-item>
+   </ion-item-group>
  </ion-list>
```

For details, please refer to [USING_ION_ITEM_GROUP.md](./USING_ION_ITEM_GROUP.md).

## Features

### CSS Variables

To customize the library's default styles to match your design, several CSS variables are provided. See this file for details:
https://github.com/rdlabo-team/ionic-theme-ios26/blob/main/src/styles/default-variables.scss

### `.ios26-disabled` Class

Add the `.ios26-disabled` class to disable the iOS26 theme on specific components.

```html

<ion-button>iOS26 Design</ion-button>

<ion-button class="ios26-disabled">Standard Ionic Design</ion-button>
```

### Liquid Glass Mixin

Import the SCSS files from the main package to use the liquid glass mixin.

```scss
@use '@rdlabo/ionic-theme-ios26/src/styles/utils/api.scss';

ion-textarea label.textarea-wrapper {
  @include api.glass-background;
}
```

### Additional Design

To achieve higher fidelity to iOS26 design, you can implement additional design provided by this library. For more details, please visit:

https://ionic-theme-ios26.netlify.app/main/docs

## Experimental Animation

__This feature is experimental. The library can be used without this feature.__

### Sheet of Glass with `ion-tab-button` / `ion-segment-button`

By registering `ion-tab-bar` / `ion-segment`, you can display animation effects on `ion-tab-button` / `ion-segment-button`

[![Image from Gyazo](https://i.gyazo.com/fafd726b520827f042c76b6c73abd81c.gif)](https://gyazo.com/fafd726b520827f042c76b6c73abd81c)

```js
import { registerTabBarEffect, registerSegmentEffect } from '@rdlabo/ionic-theme-ios26';

/**
 * Register DOM elements. Effects are applied using Ionic Gesture and Ionic Animation.
 */
const registeredTabBarEffect = registerTabBarEffect(document.querySelector<HTMLElement>('ion-tab-bar'));
const registeredSegmentEffect = registerSegmentEffect(document.querySelector<HTMLElement>('ion-segment'));

const destroy = () => {
  /**
   * If the registered DOM element is removed (e.g., due to page navigation),
   * make sure to destroy the gesture and animation. This will also remove the event listeners.
   * You can re-register them if needed.
   */
  registeredTabBarEffect?.destroy();
  registeredSegmentEffect?.destroy();
}
```

### TabBarSearchable: Searchable with `ion-tab-bar` and `ion-fab-button`

Enable Searchable for the DOM structure with the specified markup inner `ion-tabs`.

[![Image from Gyazo](https://i.gyazo.com/06bc63f4a474f9f19f5b1d865f5c2a85.gif)](https://gyazo.com/06bc63f4a474f9f19f5b1d865f5c2a85)

```html
<ion-content>...</ion-content>
<ion-fab vertical="bottom" horizontal="end" slot="fixed">
  <ion-fab-button (click)="present($event)">
    <ion-icon name="search"></ion-icon>
  </ion-fab-button>
</ion-fab>
<ion-footer [translucent]="true">
  <ion-toolbar>
    <ion-buttons slot="start">
      
      <ion-button fill="default"><ion-icon slot="icon-only"></ion-icon>
      </ion-button>
    </ion-buttons>
    
    <ion-searchbar (ionChange)="example($event)"></ion-searchbar>
  </ion-toolbar>
</ion-footer>
```

```ts
import { attachTabBarSearchable, TabBarSearchableFunction, TabBarSearchableType } from '@rdlabo/ionic-theme-ios26';

let searchableFun: TabBarSearchableFunction | undefined;
const initialize = () => {
  // attachTabBarSearchable has state. You should initialize per page.
  searchableFun = attachTabBarSearchable(
    document.querySelector<HTMLElement>('ion-tab-bar'),
    document.querySelector('ion-fab-button'),
    document.querySelector('ion-footer'),
  );
}

const present = (event: Event) => {
  searchableFun!(event, TabBarSearchableType.Enter);
}

const dismiss = (event: Event) => {
  searchableFun!(event, TabBarSearchableType.Leave);
}
```

## Additional Information

### How to prevent loading a theme file on iOS 18

If you want to load a theme file only when the user's device is running iOS 26 (and let users on iOS 18 use the default Ionic iOS theme), you can achieve this by adding a supports-condition to your `import`.

```css
@import '@rdlabo/ionic-theme-ios26/dist/css/default-variables.css' supports(text-wrap: pretty);
@import '@rdlabo/ionic-theme-ios26/dist/css/ionic-theme-ios26.css' supports(text-wrap: pretty);
@import '@rdlabo/ionic-theme-ios26/dist/css/md-remove-ios-class-effect.css' supports(text-wrap: pretty);
@import '@rdlabo/ionic-theme-ios26/dist/css/md-ion-list-inset.css' supports(text-wrap: pretty);
```

## Migration Support

For gradual migration, you can selectively apply the iOS26 theme by importing individual components instead of the full theme file.

```css
@import '@rdlabo/ionic-theme-ios26/dist/css/utils/translucent';
@import '@rdlabo/ionic-theme-ios26/dist/css/components/ion-action-sheet';
@import '@rdlabo/ionic-theme-ios26/dist/css/components/ion-alert';
@import '@rdlabo/ionic-theme-ios26/dist/css/components/ion-breadcrumbs';
@import '@rdlabo/ionic-theme-ios26/dist/css/components/ion-button';
...
```

### Dark Mode with Individual Components

When importing individual components with dark mode support, use SCSS instead of CSS. This is because the selectors differ between `Always`, `System`, and `Class` modes.

> **Note**: Currently, only `ion-button` has separate dark mode styling applied.

Always (Always Dark Mode):
```scss
@use '@rdlabo/ionic-theme-ios26/src/styles/utils/theme-dark';

:root {
    @include theme-dark.default-variables;
}
@include theme-dark.ion-button;
@include theme-dark.ion-fab;
@include theme-dark.ion-tabs;
@include theme-dark.ion-segment;
```

System (Follow System Settings):
```scss
@use '@rdlabo/ionic-theme-ios26/src/styles/utils/theme-dark';

@media (prefers-color-scheme: dark) {
    :root {
        @include theme-dark.default-variables;
    }
    @include theme-dark.ion-button;
    @include theme-dark.ion-fab;
    @include theme-dark.ion-tabs;
    @include theme-dark.ion-segment;
}
```

Class (Toggle with CSS Class):
```scss
@use '@rdlabo/ionic-theme-ios26/src/styles/utils/theme-dark';

.ion-palette-dark {
    @include theme-dark.default-variables;
    @include theme-dark.ion-button;
    @include theme-dark.ion-fab;
    @include theme-dark.ion-tabs;
    @include theme-dark.ion-segment;
}
```

## Development & Testing

### Demo Application

The `demo/` directory contains an Angular application for testing and demonstrating the theme. To run the demo:

```bash
cd demo
npm install
npm start
```

### Visual Regression Testing

We use Playwright for visual regression testing to ensure consistent styling across all components. The test suite automatically captures screenshots of all routes in both light and dark modes.

#### Running Tests

```bash
cd demo

# Run all E2E tests
npm run test:e2e

# Run tests in UI mode (interactive)
npm run test:e2e:ui

# Debug tests
npm run test:e2e:debug

# Update baseline screenshots (when intentionally changing UI)
npm run test:e2e:update
```

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