@solid-aria/breadcrumbs NPM

@solid-aria/breadcrumbs

Breadcrumbs display a heirarchy of links to the current page or resource in an application.

createBreadcrumbs and createBreadcrumbItem - Provides the behavior and accessibility implementation for a breadcrumbs component.

Installation

npm install @solid-aria/breadcrumbs
# or
yarn add @solid-aria/breadcrumbs
# or
pnpm add @solid-aria/breadcrumbs

`createBreadcrumbs` and `createBreadcrumbItem`

Provides the behavior and accessibility implementation for a breadcrumbs component.

Features

Breadcrumbs provide a list of links to parent pages of the current page in hierarchical order. createBreadcrumbs and createBreadcrumbItem help implement these in an accessible way.

Support for mouse, touch, and keyboard interactions on breadcrumbs
Support for navigation links via <a> elements or custom element types via ARIA
Support for disabled breadcrumbs
Support for breadcrumbs as a heading

How to use it

This example displays a basic list of breadcrumbs using an HTML <nav> element, and a <ol> for the list of links. Each link is a span because we are handling the interactions locally via onPress. createBreadcrumbItem automatically handles exposing these spans as links to assistive technology.

The chevrons between each link are rendered using a span with aria-hidden="true" so that screen readers do not pick them up. You could also render them similarly using SVG icons, CSS :after, or other techniques.

The last link is non-interactive since it represents the current page. This is done by adding the isCurrent prop.

import {
  AriaBreadcrumbItemProps,
  AriaBreadcrumbsProps,
  createBreadcrumbItem,
  createBreadcrumbs
} from "@solid-aria/breadcrumbs";
import { mergeProps, Show } from "solid-js";

function Breadcrumbs(props: AriaBreadcrumbsProps) {
  const { navProps } = createBreadcrumbs(props);

  return (
    <nav {...navProps}>
      <ol style={{ display: "flex", "list-style": "none", margin: 0, padding: 0 }}>
        {props.children}
      </ol>
    </nav>
  );
}

function BreadcrumbItem(props: AriaBreadcrumbItemProps) {
  let ref: HTMLSpanElement | undefined;

  props = mergeProps({ elementType: "span" }, props);

  const { itemProps } = createBreadcrumbItem<HTMLSpanElement>(props, () => ref);

  return (
    <li>
      <span
        {...itemProps}
        ref={ref}
        style={{
          color: "blue",
          "text-decoration": props.isCurrent ? undefined : "underline",
          "font-weight": props.isCurrent ? "bold" : undefined,
          cursor: props.isCurrent ? "default" : "pointer"
        }}
      >
        {props.children}
      </span>
      <Show when={!props.isCurrent}>
        <span aria-hidden="true" style={{ padding: "0 5px" }}>
          {"›"}
        </span>
      </Show>
    </li>
  );
}

function App() {
  return (
    <Breadcrumbs>
      <BreadcrumbItem onPress={() => alert("Pressed Folder 1")}>Folder 1</BreadcrumbItem>
      <BreadcrumbItem onPress={() => alert("Pressed Folder 2")}>Folder 2</BreadcrumbItem>
      <BreadcrumbItem isCurrent>Folder 3</BreadcrumbItem>
    </Breadcrumbs>
  );
}

Navigation links

This example is similar to the previous one, except the individual breadcrumbs are native navigation links to other pages rather than handled by JavaScript.

import {
  AriaBreadcrumbItemProps,
  AriaBreadcrumbsProps,
  createBreadcrumbItem,
  createBreadcrumbs
} from "@solid-aria/breadcrumbs";
import { JSX, Show } from "solid-js";

function Breadcrumbs(props: AriaBreadcrumbsProps) {
  const { navProps } = createBreadcrumbs(props);

  return (
    <nav {...navProps}>
      <ol style={{ display: "flex", "list-style": "none", margin: 0, padding: 0 }}>
        {props.children}
      </ol>
    </nav>
  );
}

type BreadcrumbItemProps = AriaBreadcrumbItemProps & JSX.AnchorHTMLAttributes<HTMLAnchorElement>;

function BreadcrumbItem(props: BreadcrumbItemProps) {
  let ref: HTMLAnchorElement | undefined;

  const { itemProps } = createBreadcrumbItem(props, () => ref);

  return (
    <li>
      <a
        {...itemProps}
        ref={ref}
        href={props.href}
        style={{
          color: "blue",
          "font-weight": props.isCurrent ? "bold" : undefined,
          cursor: props.isCurrent ? "default" : "pointer"
        }}
      >
        {props.children}
      </a>
      <Show when={!props.isCurrent}>
        <span aria-hidden="true" style={{ padding: "0 5px" }}>
          {"›"}
        </span>
      </Show>
    </li>
  );
}

function App() {
  return (
    <Breadcrumbs>
      <BreadcrumbItem href="/">Home</BreadcrumbItem>
      <BreadcrumbItem href="/solid-aria">Solid Aria</BreadcrumbItem>
      <BreadcrumbItem isCurrent>createBreadcrumbs</BreadcrumbItem>
    </Breadcrumbs>
  );
}

Breadcrumbs as a heading

If you use breadcrumbs in the context where a heading would normally be used, you should make sure that the proper elementType for each breadcrumb is communicated to createBreadcrumbItem so that you receive the correct itemProps to spread on your breadcrumb. This can be seen in the example below where we specify that the last breadcrumb has an <h3> and all other breadcrumbs are of type <a>.

import {
  AriaBreadcrumbItemProps,
  AriaBreadcrumbsProps,
  createBreadcrumbItem,
  createBreadcrumbs
} from "@solid-aria/breadcrumbs";
import { JSX, Show } from "solid-js";

function Breadcrumbs(props: AriaBreadcrumbsProps) {
  const { navProps } = createBreadcrumbs(props);

  return (
    <nav {...navProps}>
      <ol style={{ display: "flex", "list-style": "none", margin: 0, padding: 0 }}>
        {props.children}
      </ol>
    </nav>
  );
}

type BreadcrumbItemProps = AriaBreadcrumbItemProps & JSX.AnchorHTMLAttributes<HTMLAnchorElement>;

function BreadcrumbItem(props: BreadcrumbItemProps) {
  let ref: any;

  const { itemProps } = createBreadcrumbItem<any, any>(
    {
      ...props,
      get elementType() {
        return props.isCurrent ? "h3" : "a";
      }
    },
    () => ref
  );

  return (
    <li>
      <Show
        when={props.isCurrent}
        fallback={
          <>
            <a
              {...itemProps}
              ref={ref}
              href={props.href}
              style={{
                color: props.isDisabled ? "gray" : "blue",
                "font-weight": props.isCurrent ? "bold" : undefined,
                cursor: props.isCurrent ? "default" : "pointer"
              }}
            >
              {props.children}
            </a>
            <span aria-hidden="true" style={{ padding: "0 5px" }}>
              {"›"}
            </span>
          </>
        }
      >
        <h3
          {...itemProps}
          ref={ref}
          style={{
            margin: 0,
            "font-size": "1em",
            color: "blue"
          }}
        >
          {props.children}
        </h3>
      </Show>
    </li>
  );
}

function App() {
  return (
    <Breadcrumbs>
      <BreadcrumbItem href="/">Home</BreadcrumbItem>
      <BreadcrumbItem href="/solid-aria">Solid Aria</BreadcrumbItem>
      <BreadcrumbItem isCurrent>createBreadcrumbs</BreadcrumbItem>
    </Breadcrumbs>
  );
}