トースト

<!-- Global notification live region, render this permanently at the end of the document -->
<div id="global-notification" aria-live="assertive" class="pointer-events-none fixed inset-0 flex items-end px-4 py-6 sm:items-start sm:p-6">
  <div class="flex w-full flex-col items-center space-y-4 sm:items-end">
    <!--
      Notification panel, dynamically insert this into the live region when it needs to be displayed

      Entering: "transform ease-out duration-300 transition"
        From: "translate-y-2 opacity-0 sm:translate-y-0 sm:translate-x-2"
        To: "translate-y-0 opacity-100 sm:translate-x-0"
      Leaving: "transition ease-in duration-100"
        From: "opacity-100"
        To: "opacity-0"
    -->
    <% if notice.present? %>
      <div data-controller="global-notification"
           data-global-notification-target="toast"
           data-global-notification-shown-value="false"
           class="transform transition
                  data-[global-notification-shown-value=false]:ease-in
                  data-[global-notification-shown-value=false]:duration-100
                  data-[global-notification-shown-value=false]:opacity-0
                  data-[global-notification-shown-value=false]:translate-y-2
                  data-[global-notification-shown-value=false]:sm:translate-y-0
                  data-[global-notification-shown-value=false]:sm:translate-x-2
                  ease-out duration-300 translate-y-0 opacity-100 sm:translate-x-0
                  pointer-events-auto w-full max-w-sm overflow-hidden rounded-lg bg-white shadow-lg ring-1 ring-black ring-opacity-5"
      >
        <div class="p-4">
          <div class="flex items-start">
            <div class="flex-shrink-0">
              <svg class="h-6 w-6 text-green-400" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" aria-hidden="true">
                <path stroke-linecap="round" stroke-linejoin="round" d="M9 12.75L11.25 15 15 9.75M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
              </svg>
            </div>
            <div class="ml-3 w-0 flex-1 pt-0.5">
              <p class="text-sm font-medium text-gray-900"><%= notice %></p>
            </div>
            <div class="ml-4 flex flex-shrink-0">
              <button type="button"
                      class="inline-flex rounded-md bg-white text-gray-400 hover:text-gray-500 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                      data-action="click->global-notification#close"
              >
                <span class="sr-only">Close</span>
                <svg class="h-5 w-5" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
                  <path d="M6.28 5.22a.75.75 0 00-1.06 1.06L8.94 10l-3.72 3.72a.75.75 0 101.06 1.06L10 11.06l3.72 3.72a.75.75 0 101.06-1.06L11.06 10l3.72-3.72a.75.75 0 00-1.06-1.06L10 8.94 6.28 5.22z"/>
                </svg>
              </button>
            </div>
          </div>
        </div>
      </div>
    <% end %>
  </div>
</div>

import {Controller} from "@hotwired/stimulus"
import {classTokenize} from "../utilities/utilities";

// Connects to data-controller="global-notification"
export default class extends Controller {
  static values = { shown: {type: Boolean, default: true} }
  static targets = ["toast"]

  connect() {
  }

  close() {
    this.shownValue = false
    // The CSS transition has a duration of 100ms, so we remove the DOM element
    // after allowing the transition to finish.
    setInterval(() => this.element.remove(), 200)
  }

  /*
  * The @starting-style CSS @rule allows you to set starting values on transitions
  * when an element is first added to the DOM. https://developer.mozilla.org/en-US/docs/Web/CSS/@starting-style#description
  *
  * However, since this is still an experimental feature as of Nov. 2024, we use a
  * JavaScript workaround.
  * */
  toastTargetConnected(element) {
    // We wait 10 ms to allow the DOM to render with the Toast in the hidden state and then
    // show the Toast.
    setTimeout(() => {
      this.shownValue = true
    }, 10)
  }
}