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import { h, Component } from '/js/web_modules/preact.js';
import htm from '/js/web_modules/htm.js';
const html = htm.bind(h);
export default class TabBar extends Component {
constructor(props) {
super(props);
this.state = {
activeIndex: 0,
};
this.handleTabClick = this.handleTabClick.bind(this);
}
handleTabClick(index) {
this.setState({ activeIndex: index });
}
render() {
const { tabs, ariaLabel } = this.props;
if (!tabs.length) {
return null;
}
if (tabs.length === 1) {
return html`
${tabs[0].content}
`;
} else {
return html`
<div class="tab-bar">
<div role="tablist" aria-label=${ariaLabel}>
${
tabs.map((tabItem, index) => {
const handleClick = () => this.handleTabClick(index);
return html`
<button
role="tab"
aria-selected=${index === this.state.activeIndex}
aria-controls=${`tabContent${index}`}
id=${`tab-${tabItem.label}`}
onclick=${handleClick}
>${tabItem.label}</button>
`;
})
}
</div>
${
tabs.map((tabItem, index) => {
return html`
<div
tabindex="0"
role="tabpanel"
id=${`tabContent${index}`}
aria-labelledby=${`tab-${tabItem.label}`}
hidden=${index !== this.state.activeIndex}
>
${tabItem.content}
</div>
`;
})
}
</div>
`;
}
}
}
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