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feat(cdk-experimental/tabs): add cdk-active class and update example styles #30950

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Merged
merged 1 commit into from
Apr 24, 2025
Merged

feat(cdk-experimental/tabs): add cdk-active class and update example styles #30950

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1 change: 1 addition & 0 deletions .ng-dev/commit-message.mts
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@ export const commitMessage: CommitMessageConfig = {
'cdk-experimental/scrolling',
'cdk-experimental/selection',
'cdk-experimental/table-scroll-container',
'cdk-experimental/tabs',
'cdk-experimental/ui-patterns',
'cdk/a11y',
'cdk/accordion',
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1 change: 1 addition & 0 deletions src/cdk-experimental/tabs/tabs.ts
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Expand Up @@ -137,6 +137,7 @@ export class CdkTabList {
host: {
'role': 'tab',
'class': 'cdk-tab',
'[class.cdk-active]': 'pattern.active()',
'[attr.id]': 'pattern.id()',
'[attr.tabindex]': 'pattern.tabindex()',
'[attr.aria-selected]': 'pattern.selected()',
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3 changes: 3 additions & 0 deletions src/cdk-experimental/ui-patterns/tabs/tabs.ts
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Expand Up @@ -37,6 +37,9 @@ export class TabPattern {
/** A local unique identifier for the tab. */
value: SignalLike<string>;

/** Whether the tab is active. */
active = computed(() => this.tablist()?.focusManager.activeItem() === this);

/** Whether the tab is selected. */
selected = computed(() => this.tablist().selection.inputs.value().includes(this.value()));

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15 changes: 12 additions & 3 deletions src/components-examples/cdk-experimental/tabs/cdk-tabs/cdk-tabs-example.css
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Expand Up @@ -25,7 +25,6 @@
list-style: none;
flex-direction: row;
justify-content: center;
overflow: scroll;
}

.example-tablist[aria-orientation='vertical'] {
Expand All @@ -43,6 +42,11 @@
display: block;
}

.example-tablist[aria-disabled='true'] {
background-color: var(--mat-sys-surface-dim);
pointer-events: none;
}

.example-tab {
gap: 16px;
padding: 16px;
Expand All @@ -52,8 +56,8 @@
border-radius: var(--mat-sys-corner-extra-small);
}

.example-tab:hover,
.example-tab[tabindex='0'] {
.example-tablist:focus-within .example-tab:hover,
.example-tablist:focus-within .example-tab.cdk-active {
outline: 1px solid var(--mat-sys-outline);
background: var(--mat-sys-surface-container);
}
Expand All @@ -67,6 +71,11 @@
background-color: var(--mat-sys-secondary-container);
}

.example-tab[aria-disabled='true'] {
background-color: var(--mat-sys-surface-dim);
pointer-events: none;
}

.example-tabpanel {
margin: 8px;
}
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2 changes: 1 addition & 1 deletion src/components-examples/cdk-experimental/tabs/cdk-tabs/cdk-tabs-example.html
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Expand Up @@ -41,7 +41,7 @@
[selectionMode]="selectionMode"
>
<li cdkTab value="tab-1" class="example-tab">tab 1</li>
<li cdkTab value="tab-2" class="example-tab">tab 2</li>
<li cdkTab value="tab-2" class="example-tab" disabled="true">tab 2</li>
<li cdkTab value="tab-3" class="example-tab">tab 3</li>
</ul>

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