feat(sbb-tab-group): tab titles redesign

src/components.d.ts

@@ -38,6 +38,7 @@ import { InterfaceSbbRadioButtonGroupAttributes } from "./components/sbb-radio-b
 import { SelectChange } from "./components/sbb-select/sbb-select.custom";
 import { InterfaceSbbSelectionPanelAttributes } from "./components/sbb-selection-panel/sbb-selection-panel.custom";
 import { InterfaceSignetAttributes } from "./components/sbb-signet/sbb-signet.custom";
+import { InterfaceSbbTabGroupTab } from "./components/sbb-tab-group/sbb-tab-group.custom";
 import { TagStateChange } from "./components/sbb-tag/sbb-tag.custom";
 import { InterfaceTimetableParkAndRailAttributes } from "./components/sbb-timetable-park-and-rail/sbb-timetable-park-and-rail.custom";
 import { Boarding, Price } from "./components/sbb-timetable-row/sbb-timetable-row.custom";
@@ -84,6 +85,7 @@ export { InterfaceSbbRadioButtonGroupAttributes } from "./components/sbb-radio-b
 export { SelectChange } from "./components/sbb-select/sbb-select.custom";
 export { InterfaceSbbSelectionPanelAttributes } from "./components/sbb-selection-panel/sbb-selection-panel.custom";
 export { InterfaceSignetAttributes } from "./components/sbb-signet/sbb-signet.custom";
+export { InterfaceSbbTabGroupTab } from "./components/sbb-tab-group/sbb-tab-group.custom";
 export { TagStateChange } from "./components/sbb-tag/sbb-tag.custom";
 export { InterfaceTimetableParkAndRailAttributes } from "./components/sbb-timetable-park-and-rail/sbb-timetable-park-and-rail.custom";
 export { Boarding, Price } from "./components/sbb-timetable-row/sbb-timetable-row.custom";
@@ -1554,6 +1556,10 @@ export namespace Components {
           * Sets the initial tab. If it matches a disabled tab or exceeds the length of the tab group, the first enabled tab will be selected.
          */
         "initialSelectedIndex": number;
+        /**
+          * Size variant, either l or xl.
+         */
+        "size": InterfaceSbbTabGroupTab['size'];
     }
     interface SbbTabTitle {
         /**
@@ -4394,6 +4400,10 @@ declare namespace LocalJSX {
           * Emits an event on selected tab change
          */
         "onDid-change"?: (event: SbbTabGroupCustomEvent<void>) => void;
+        /**
+          * Size variant, either l or xl.
+         */
+        "size"?: InterfaceSbbTabGroupTab['size'];
     }
     interface SbbTabTitle {
         /**

src/components/sbb-tab-group/readme.md

@@ -46,9 +46,10 @@ or using the `amount` slot of the `sbb-tab-title`.
 
 ## Properties
 
-| Property               | Attribute                | Description                                                                                                                        | Type     | Default |
-| ---------------------- | ------------------------ | ---------------------------------------------------------------------------------------------------------------------------------- | -------- | ------- |
-| `initialSelectedIndex` | `initial-selected-index` | Sets the initial tab. If it matches a disabled tab or exceeds the length of the tab group, the first enabled tab will be selected. | `number` | `0`     |
+| Property               | Attribute                | Description                                                                                                                        | Type          | Default |
+| ---------------------- | ------------------------ | ---------------------------------------------------------------------------------------------------------------------------------- | ------------- | ------- |
+| `initialSelectedIndex` | `initial-selected-index` | Sets the initial tab. If it matches a disabled tab or exceeds the length of the tab group, the first enabled tab will be selected. | `number`      | `0`     |
+| `size`                 | `size`                   | Size variant, either l or xl.                                                                                                      | `"l" \| "xl"` | `'l'`   |
 
 
 ## Events

src/components/sbb-tab-group/sbb-tab-group.custom.d.ts

@@ -13,4 +13,5 @@ export interface InterfaceSbbTabGroupTab extends HTMLStencilElement {
   relatedContent?: HTMLElement;
   index?: number;
   tabGroupActions?: InterfaceSbbTabGroupActions;
+  size: 'l' | 'xl';
 }

src/components/sbb-tab-group/sbb-tab-group.scss

@@ -7,7 +7,6 @@
 .tab-group {
   display: flex;
   flex-wrap: wrap;
-  gap: var(--sbb-spacing-fixed-3x);
 }
 
 .tab-content {

src/components/sbb-tab-group/sbb-tab-group.stories.tsx

@@ -6,7 +6,7 @@ import { withActions } from '@storybook/addon-actions/decorator';
 import type { Meta, StoryObj, ArgTypes, Args, Decorator } from '@storybook/html';
 import type { InputType } from '@storybook/types';
 
-const firstTabTitle = ({ label, ...args }): JSX.Element => (
+const firstTabTitle = (label, args): JSX.Element => (
   <sbb-tab-title {...args}>{label}</sbb-tab-title>
 );
 
@@ -40,9 +40,9 @@ const tabPanelFour = (): JSX.Element => (
   </article>
 );
 
-const DefaultTemplate = (args): JSX.Element => (
-  <sbb-tab-group initial-selected-index="0">
-    {firstTabTitle(args)}
+const DefaultTemplate = ({ size, label, ...args }): JSX.Element => (
+  <sbb-tab-group size={size} initial-selected-index="0">
+    {firstTabTitle(label, args)}
     {tabPanelOne()}
 
     <sbb-tab-title>Tab title two</sbb-tab-title>
@@ -56,9 +56,9 @@ const DefaultTemplate = (args): JSX.Element => (
   </sbb-tab-group>
 );
 
-const IconsAndNumbersTemplate = (args): JSX.Element => (
-  <sbb-tab-group initial-selected-index="0">
-    {firstTabTitle(args)}
+const IconsAndNumbersTemplate = ({ size, label, ...args }): JSX.Element => (
+  <sbb-tab-group size={size} initial-selected-index="0">
+    {firstTabTitle(label, args)}
     {tabPanelOne()}
 
     <sbb-tab-title amount={args.amount} icon-name="swisspass-small">
@@ -78,10 +78,10 @@ const IconsAndNumbersTemplate = (args): JSX.Element => (
   </sbb-tab-group>
 );
 
-const NestedTemplate = (args): JSX.Element => (
-  <sbb-tab-group initial-selected-index="0">
-    {firstTabTitle(args)}
-    <sbb-tab-group initial-selected-index="1">
+const NestedTemplate = ({ size, label, ...args }): JSX.Element => (
+  <sbb-tab-group size={size} initial-selected-index="0">
+    {firstTabTitle(label, args)}
+    <sbb-tab-group size={size} initial-selected-index="1">
       <sbb-tab-title level="2">Nested tab</sbb-tab-title>
       <div>
         Diam maecenas ultricies mi eget mauris pharetra et ultrices neque ornare aenean euismod
@@ -143,16 +143,25 @@ const amount: InputType = {
   },
 };
 
+const size: InputType = {
+  control: {
+    type: 'inline-radio',
+  },
+  options: ['l', 'xl'],
+};
+
 const basicArgTypes: ArgTypes = {
   label,
   'icon-name': iconName,
   amount: amount,
+  size: size,
 };
 
 const basicArgs: Args = {
   label: 'Tab label one',
   'icon-name': undefined,
   amount: undefined,
+  size: size.options[0],
 };
 
 const templateRes = [
@@ -164,20 +173,34 @@ const templateRes = [
   withActions as Decorator,
 ];
 
-export const defaultTabs: StoryObj = {
+export const defaultTabsSizeL: StoryObj = {
   render: DefaultTemplate,
   argTypes: basicArgTypes,
   args: { ...basicArgs },
   decorators: templateRes,
 };
 
-export const numbersAndIcons: StoryObj = {
+export const numbersAndIconsSizeL: StoryObj = {
   render: IconsAndNumbersTemplate,
   argTypes: basicArgTypes,
   args: { ...basicArgs, amount: 16, 'icon-name': iconName.options[0] },
   decorators: templateRes,
 };
 
+export const defaultTabsSizeXL: StoryObj = {
+  render: DefaultTemplate,
+  argTypes: basicArgTypes,
+  args: { ...basicArgs, size: size.options[1] },
+  decorators: templateRes,
+};
+
+export const numbersAndIconsSizeXL: StoryObj = {
+  render: IconsAndNumbersTemplate,
+  argTypes: basicArgTypes,
+  args: { ...basicArgs, amount: 16, 'icon-name': iconName.options[0], size: size.options[1] },
+  decorators: templateRes,
+};
+
 export const nestedTabGroups: StoryObj = {
   render: NestedTemplate,
   argTypes: basicArgTypes,

src/components/sbb-tab-group/sbb-tab-group.tsx

@@ -10,10 +10,11 @@ import {
   Listen,
   Method,
   Prop,
+  Watch,
 } from '@stencil/core';
 import { InterfaceSbbTabGroupTab } from './sbb-tab-group.custom';
 import { isArrowKeyPressed, getNextElementIndex, interactivityChecker } from '../../global/a11y';
-import { isValidAttribute, hostContext } from '../../global/dom';
+import { isValidAttribute, hostContext, toggleDatasetEntry } from '../../global/dom';
 import { throttle } from '../../global/eventing';
 import { AgnosticMutationObserver, AgnosticResizeObserver } from '../../global/observers';
 
@@ -40,25 +41,41 @@ let nextId = 0;
   tag: 'sbb-tab-group',
 })
 export class SbbTabGroup implements ComponentInterface {
-  public tabs: InterfaceSbbTabGroupTab[] = [];
+  private _tabs: InterfaceSbbTabGroupTab[] = [];
   private _selectedTab: InterfaceSbbTabGroupTab;
   private _isNested: boolean;
+  private _tabGroupElement: HTMLElement;
   private _tabContentElement: HTMLElement;
-  private _tabAttributeObserver = new AgnosticMutationObserver(
-    this._onTabAttributesChange.bind(this),
+  private _tabAttributeObserver = new AgnosticMutationObserver((mutationsList) =>
+    this._onTabAttributesChange(mutationsList),
   );
-  private _tabContentResizeObserver = new AgnosticResizeObserver(
-    this._onTabContentElementResize.bind(this),
+  private _tabGroupResizeObserver = new AgnosticResizeObserver((entries) =>
+    this._onTabGroupElementResize(entries),
+  );
+  private _tabContentResizeObserver = new AgnosticResizeObserver((entries) =>
+    this._onTabContentElementResize(entries),
   );
 
   @Element() private _element: HTMLElement;
 
+  /**
+   * Size variant, either l or xl.
+   */
+  @Prop() public size: InterfaceSbbTabGroupTab['size'] = 'l';
+
   /**
    * Sets the initial tab. If it matches a disabled tab or exceeds the length of
    * the tab group, the first enabled tab will be selected.
    */
   @Prop() public initialSelectedIndex = 0;
 
+  @Watch('size')
+  public updateSize(): void {
+    for (const tab of this._tabs) {
+      tab.setAttribute('data-size', this.size);
+    }
+  }
+
   /**
    * Emits an event on selected tab change
    */
@@ -73,7 +90,7 @@ export class SbbTabGroup implements ComponentInterface {
    */
   @Method()
   public async disableTab(tabIndex: number): Promise<void> {
-    this.tabs[tabIndex]?.tabGroupActions.disable();
+    this._tabs[tabIndex]?.tabGroupActions.disable();
   }
 
   /**
@@ -82,7 +99,7 @@ export class SbbTabGroup implements ComponentInterface {
    */
   @Method()
   public async enableTab(tabIndex: number): Promise<void> {
-    this.tabs[tabIndex]?.tabGroupActions.enable();
+    this._tabs[tabIndex]?.tabGroupActions.enable();
   }
 
   /**
@@ -91,7 +108,7 @@ export class SbbTabGroup implements ComponentInterface {
    */
   @Method()
   public async activateTab(tabIndex: number): Promise<void> {
-    this.tabs[tabIndex]?.tabGroupActions.select();
+    this._tabs[tabIndex]?.tabGroupActions.select();
   }
 
   private _getTabs(): InterfaceSbbTabGroupTab[] {
@@ -101,7 +118,7 @@ export class SbbTabGroup implements ComponentInterface {
   }
 
   private get _enabledTabs(): InterfaceSbbTabGroupTab[] {
-    return this.tabs.filter(
+    return this._tabs.filter(
       (t) => !isValidAttribute(t, 'disabled') && interactivityChecker.isVisible(t),
     );
   }
@@ -111,39 +128,42 @@ export class SbbTabGroup implements ComponentInterface {
   }
 
   public componentDidLoad(): void {
-    this.tabs = this._getTabs();
-    this.tabs.forEach((tab) => this._configure(tab));
+    this._tabs = this._getTabs();
+    this._tabs.forEach((tab) => this._configure(tab));
     this._initSelection();
+    this._tabGroupResizeObserver.observe(this._tabGroupElement);
   }
 
   public disconnectedCallback(): void {
     this._tabAttributeObserver.disconnect();
     this._tabContentResizeObserver.disconnect();
+    this._tabGroupResizeObserver.disconnect();
   }
 
   private _onContentSlotChange = (): void => {
     this._tabContentElement = this._element.shadowRoot.querySelector('div.tab-content');
-    const loadedTabs = this._getTabs().filter((tab) => !this.tabs.includes(tab));
+    const loadedTabs = this._getTabs().filter((tab) => !this._tabs.includes(tab));
 
     // if a new tab/content is added to the tab group
     if (loadedTabs.length) {
       loadedTabs.forEach((tab) => this._configure(tab));
-      this.tabs = this.tabs.concat(loadedTabs);
+      this._tabs = this._tabs.concat(loadedTabs);
     }
   };
 
   private _onTabsSlotChange = (): void => {
     const tabs = this._getTabs();
 
     // if a tab is removed from the tab group
-    if (tabs.length < this.tabs.length) {
-      const removedTabs = this.tabs.filter((tab) => !tabs.includes(tab));
+    if (tabs.length < this._tabs.length) {
+      const removedTabs = this._tabs.filter((tab) => !tabs.includes(tab));
 
       removedTabs.forEach((removedTab) => {
         removedTab.relatedContent?.remove();
       });
-      this.tabs = tabs;
+      this._tabs = tabs;
     }
+    this._tabs.forEach((tab: HTMLSbbTabTitleElement) => tab.setAttribute('data-size', this.size));
   };
 
   private _assignId(): string {
@@ -153,10 +173,10 @@ export class SbbTabGroup implements ComponentInterface {
   private _initSelection(): void {
     if (
       this.initialSelectedIndex >= 0 &&
-      this.initialSelectedIndex < this.tabs.length &&
-      !this.tabs[this.initialSelectedIndex].disabled
+      this.initialSelectedIndex < this._tabs.length &&
+      !this._tabs[this.initialSelectedIndex].disabled
     ) {
-      this.tabs[this.initialSelectedIndex].tabGroupActions.select();
+      this._tabs[this.initialSelectedIndex].tabGroupActions.select();
     } else {
       this._enabledTabs[0]?.tabGroupActions.select();
     }
@@ -186,6 +206,26 @@ export class SbbTabGroup implements ComponentInterface {
     }
   }
 
+  private _onTabGroupElementResize(entries: ResizeObserverEntry[]): void {
+    for (const entry of entries) {
+      const tabTitles = (
+        entry.target.firstElementChild as HTMLSlotElement
+      ).assignedElements() as HTMLSbbTabTitleElement[];
+
+      for (const tab of tabTitles) {
+        toggleDatasetEntry(
+          tab,
+          'hasDivider',
+          tab === tabTitles[0] || tab.offsetLeft === tabTitles[0].offsetLeft,
+        );
+        this._element.style.setProperty(
+          '--sbb-tab-group-width',
+          `${this._tabGroupElement.clientWidth}px`,
+        );
+      }
+    }
+  }
+
   private _onTabContentElementResize(entries: ResizeObserverEntry[]): void {
     for (const entry of entries) {
       const contentHeight = Math.floor(entry.contentRect.height);
@@ -309,7 +349,7 @@ export class SbbTabGroup implements ComponentInterface {
   public render(): JSX.Element {
     return (
       <Host class={this._isNested ? 'tab-group--nested' : ''}>
-        <div class="tab-group" role="tablist">
+        <div class="tab-group" role="tablist" ref={(el) => (this._tabGroupElement = el)}>
           <slot name="tab-bar" onSlotchange={this._onTabsSlotChange}></slot>
         </div>