SidebarSublist

Ion’s SidebarSublist override allows you to use Icons in the sidebar.

SidebarSublist.astro

---
import { Icon } from 'astro-icon/components';
import { type SidebarEntry } from 'starlight-ion-theme/utils/navigation.js';
import Badge from './Badge.astro';
import { icons } from 'ion:globals';

interface Props {
  sublist: SidebarEntry[];
  nested?: boolean;
  nestedCount: number;
}

const { sublist, nested, nestedCount } = Astro.props;
---

<ul class:list={{ 'top-level': !nested }}>
  {
    sublist.map((entry) => {
      return (
        <li class:list={[{ nested: nested && nestedCount > 1, active: entry.type === 'link' && entry.isCurrent }, entry.label.includes("[") && "has-icon"]}>
          {entry.type === 'link' ? (
            <a
              href={entry.href}
              aria-current={entry.isCurrent && 'page'}
              class:list={[{ individual: !nested }, entry.attrs.class, "flex-link"]}
              {...entry.attrs}
            >
              {icons && entry.label.includes("[") && (
                <Icon name={entry.label.split("[").pop()?.split("]")[0] || ""} />
              )}
              <span>{entry.label.split("]").pop()?.trim()}</span>
              {entry.badge && (
                <>
                  {' '}
                  <Badge
                    text={entry.badge.text}
                    variant={entry.isCurrent ? 'outline' : entry.badge.variant}
                  />
                </>
              )}
            </a>
          ) : (
            <details
              open
            >
              <summary style="pointer-events: none;" class={nested ? "hidden" : ""}>
                <div class="group-label">
                  {icons && entry.label.includes("[") && (
                    <Icon name={entry.label.split("[").pop()?.split("]")[0] || ""} />
                  )}
                  <span class="large">{entry.label.split("]").pop()?.trim()}</span>
                  {entry.badge && (
                    <>
                      {' '}
                      <Badge text={entry.badge.text} variant={entry.badge.variant} />
                    </>
                  )}
                </div>
              </summary>
              <Astro.self sublist={entry.entries} nested nestedCount={nestedCount + 1} />
            </details>
          )}
        </li>
      )
    })
  }
</ul>

<style>
  ul {
    list-style: none;
    padding: 0;
    color: var(--sl-color-gray-2);
  }

  li {
    overflow-wrap: anywhere;
    margin-bottom: 0.25rem;
  }

  ul ul li {
    margin-inline-start: var(--sl-sidebar-item-padding-inline);
    /* border-inline-start: 1px solid var(--sl-color-hairline-light); */
    padding-inline-start: var(--sl-sidebar-item-padding-inline);
  }

  .large {
    font-size: var(--sl-text-lg);
    font-weight: 600;
    /* color: var(--sl-color-white); */
    transition: all 0.1s ease;
  }

  .individual {
    font-size: var(--sl-text-md);
    font-weight: 400;
    transition: all 0.1s ease;
  }

  ul:not(.top-level) > li > details {
    margin-inline-start: 0.5rem;
    padding-inline-start: 0.5rem;

    > summary {
      border-top: none;
      padding-top: 0;
    }
  }

  .top-level > li + li {
    margin-top: 0.75rem;
  }

  summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.2em var(--sl-sidebar-item-padding-inline);
    line-height: 1.4;
    cursor: pointer;
    user-select: none;
    margin-bottom: 0.75rem;
    margin-top: 1rem;
    border-top: 1px solid var(--sl-color-hairline-light);
    padding-top: 1rem;
  }

  summary span {
    font-family: "Space Mono", monospace;
    font-weight: 400 !important;
  }

  .top-level li:first-of-type > details > summary {
    margin-top: 0;
    border-top: none;
    padding-top: 0;
  }

  summary::marker,
  summary::-webkit-details-marker {
    display: none !important;
    background-image: none !important;
    -webkit-appearance: none !important;
  }

  .caret {
    transition: transform 0.2s ease-in-out;
    flex-shrink: 0;
  }
  :global([dir='rtl']) .caret {
    transform: rotateZ(180deg);
  }
  [open] > summary .caret {
    transform: rotateZ(90deg);
  }

  a {
    display: block;
    border-radius: 0.25rem;
    text-decoration: none;
    color: var(--sl-color-gray-2);
    padding: 0.3em var(--sl-sidebar-item-padding-inline);
    line-height: 1.4;
  }

  a:hover,
  a:focus {
    color: var(--sl-color-white);
    transition: all 0.1s ease;
  }

  [aria-current='page'],
  [aria-current='page']:hover,
  [aria-current='page']:focus {
    font-weight: 600;
    color: var(--sl-color-accent) !important;

    svg {
    filter: drop-shadow(0 0 8px var(--sl-color-accent));
    }

    span {
      color: var(--sl-color-white) !important;
    }
    /* background-color: var(--sl-color-text-accent); */
  }

  .group-label, .flex-link {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
  }

  a > *:not(:last-child),
  .group-label > *:not(:last-child) {
    margin-inline-end: 0.25em;
  }

  @media (min-width: 50rem) {
    .top-level > li + li {
      margin-top: 0.5rem;
    }
    .large {
      font-size: var(--sl-text-base);
    }
    a {
      font-size: var(--sl-text-sm);
    }
  }
</style>