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Adrien Denat coyotte508 HF staff commited on
Commit
fe5e801
•
1 Parent(s): 54abee8

Improve modal a11y (#177)

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* add Portal component so we can render modals at root for focus trap

* make modals closeable with ESC + click outside + focus trap

* remove unecessary check on inert prop

Co-authored-by: Eliott C. <[email protected]>

---------

Co-authored-by: Eliott C. <[email protected]>

Files changed (5) hide show
  1. src/app.html +1 -1
  2. src/lib/components/Modal.svelte +51 -7
  3. src/lib/components/ModelsModal.svelte +1 -1
  4. src/lib/components/Portal.svelte +19 -0
  5. src/lib/components/SettingsModal.svelte +2 -2
src/app.html CHANGED
@@ -20,7 +20,7 @@
20
  %sveltekit.head%
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  </head>
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  <body data-sveltekit-preload-data="hover" class="h-full dark:bg-gray-900">
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- <div class="contents h-full">%sveltekit.body%</div>
24
 
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  <!-- Google Tag Manager -->
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  <script>
 
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  %sveltekit.head%
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  </head>
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  <body data-sveltekit-preload-data="hover" class="h-full dark:bg-gray-900">
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+ <div id="app" class="contents h-full">%sveltekit.body%</div>
24
 
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  <!-- Google Tag Manager -->
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  <script>
src/lib/components/Modal.svelte CHANGED
@@ -1,15 +1,59 @@
1
  <script lang="ts">
 
2
  import { cubicOut } from "svelte/easing";
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  import { fade } from "svelte/transition";
 
 
4
 
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  export let width = "max-w-sm";
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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  </script>
7
 
8
- <div
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- transition:fade={{ easing: cubicOut, duration: 300 }}
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- class="fixed inset-0 z-40 flex items-center justify-center bg-black/80 p-8 backdrop-blur-sm dark:bg-black/50"
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- >
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- <div class="-mt-10 overflow-hidden rounded-2xl bg-white shadow-2xl md:-mt-20 {width}">
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- <slot />
 
 
 
 
 
 
 
 
 
 
 
 
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  </div>
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- </div>
 
1
  <script lang="ts">
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+ import { createEventDispatcher, onDestroy, onMount } from "svelte";
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  import { cubicOut } from "svelte/easing";
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  import { fade } from "svelte/transition";
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+ import Portal from "./Portal.svelte";
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+ import { browser } from "$app/environment";
7
 
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  export let width = "max-w-sm";
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+
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+ let backdropEl: HTMLDivElement;
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+ let modalEl: HTMLDivElement;
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+
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+ const dispatch = createEventDispatcher<{ close: void }>();
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+
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+ function handleKeydown(event: KeyboardEvent) {
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+ // close on ESC
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+ if (event.key === "Escape") {
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+ event.preventDefault();
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+ dispatch("close");
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+ }
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+ }
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+
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+ function handleBackdropClick(event: MouseEvent) {
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+ if (event.target === backdropEl) {
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+ dispatch("close");
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+ }
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+ }
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+
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+ onMount(() => {
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+ document.getElementById("app")?.setAttribute("inert", "true");
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+ modalEl.focus();
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+ });
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+
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+ onDestroy(() => {
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+ if (!browser) return;
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+ document.getElementById("app")?.removeAttribute("inert");
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+ });
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  </script>
39
 
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+ <Portal>
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+ <div
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+ role="presentation"
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+ tabindex="-1"
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+ bind:this={backdropEl}
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+ on:click={handleBackdropClick}
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+ transition:fade={{ easing: cubicOut, duration: 300 }}
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+ class="fixed inset-0 z-40 flex items-center justify-center bg-black/80 p-8 backdrop-blur-sm dark:bg-black/50"
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+ >
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+ <div
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+ role="dialog"
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+ tabindex="-1"
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+ bind:this={modalEl}
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+ on:keydown={handleKeydown}
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+ class="-mt-10 overflow-hidden rounded-2xl bg-white shadow-2xl outline-none md:-mt-20 {width}"
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+ >
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+ <slot />
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+ </div>
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  </div>
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+ </Portal>
src/lib/components/ModelsModal.svelte CHANGED
@@ -18,7 +18,7 @@
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  const dispatch = createEventDispatcher<{ close: void }>();
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  </script>
20
 
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- <Modal width="max-w-lg">
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  <form
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  action="{base}/settings"
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  method="post"
 
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  const dispatch = createEventDispatcher<{ close: void }>();
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  </script>
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+ <Modal width="max-w-lg" on:close>
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  <form
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  action="{base}/settings"
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  method="post"
src/lib/components/Portal.svelte ADDED
@@ -0,0 +1,19 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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+ <script lang="ts">
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+ import { onMount, onDestroy } from "svelte";
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+
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+ let el: HTMLElement;
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+
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+ onMount(() => {
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+ el.ownerDocument.body.appendChild(el);
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+ });
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+
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+ onDestroy(() => {
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+ if (el?.parentNode) {
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+ el.parentNode.removeChild(el);
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+ }
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+ });
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+ </script>
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+
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+ <div bind:this={el} class="contents" hidden>
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+ <slot />
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+ </div>
src/lib/components/SettingsModal.svelte CHANGED
@@ -13,7 +13,7 @@
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  const dispatch = createEventDispatcher<{ close: void }>();
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  </script>
15
 
16
- <Modal>
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  <form
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  class="flex w-full flex-col gap-5 p-6"
19
  use:enhance={() => {
@@ -24,7 +24,7 @@
24
  >
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  <div class="flex items-start justify-between text-xl font-semibold text-gray-800">
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  <h2>Settings</h2>
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- <button class="group" on:click={() => dispatch("close")}>
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  <CarbonClose class="text-gray-900 group-hover:text-gray-500" />
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  </button>
30
  </div>
 
13
  const dispatch = createEventDispatcher<{ close: void }>();
14
  </script>
15
 
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+ <Modal on:close>
17
  <form
18
  class="flex w-full flex-col gap-5 p-6"
19
  use:enhance={() => {
 
24
  >
25
  <div class="flex items-start justify-between text-xl font-semibold text-gray-800">
26
  <h2>Settings</h2>
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+ <button type="button" class="group" on:click={() => dispatch("close")}>
28
  <CarbonClose class="text-gray-900 group-hover:text-gray-500" />
29
  </button>
30
  </div>