一括選択バー

<%# Markup for the bulk-select / batch action bar demo.
    The controller links the select-all box to the rows (with indeterminate), reveals
    the sticky bar once one or more rows are selected, keeps the count, and hands that
    count to the shared stimeo--announcer your app seats once, in its layout, using the
    wording in announce-text-value (the bar is revealed with its count already in place,
    which a live region of its own could not announce). Row changes are handled by
    delegation, so the "Add row" button (demo.js) works without per-row wiring, and rows
    it appends are reconciled on their own. %>
<%# Sample rows come from the locale file so the table reads in the page language. %>
<%
  rows = t("components.bulk_select.demo.rows")
  announce_text = t("components.bulk_select.demo.announce_text")
%>
<%# The two-stage pattern only reads if the page says it is one page of many, so the
    demo states where total-count-value's 42 comes from. Nothing here is required by
    the controller — a single-page table simply omits the selectAllPages control. %>
<div class="bulk-demo" data-controller="stimeo--bulk-select"
     data-stimeo--bulk-select-total-count-value="42"
     data-stimeo--bulk-select-announce-text-value="<%= announce_text %>">
  <p class="bulk-demo__context"><%= t("components.bulk_select.demo.page_context") %></p>

  <table class="bulk-demo__table">
    <thead>
      <tr>
        <th scope="col">
          <input type="checkbox" data-stimeo--bulk-select-target="all"
                 aria-label="<%= t("components.bulk_select.demo.select_all") %>">
        </th>
        <th scope="col"><%= t("components.bulk_select.demo.col_name") %></th>
        <th scope="col"><%= t("components.bulk_select.demo.col_role") %></th>
      </tr>
    </thead>
    <tbody data-bulk-demo="rows">
      <% rows.each do |row| %>
        <% row_label = t("components.bulk_select.demo.select_row", name: row[:name]) %>
        <tr>
          <td>
            <input type="checkbox" data-stimeo--bulk-select-target="item"
                   aria-label="<%= row_label %>">
          </td>
          <td><%= row[:name] %></td>
          <td><%= row[:role] %></td>
        </tr>
      <% end %>
    </tbody>
  </table>

  <%# Localized templates for demo.js's appended rows ({n} = row number, {name} = the
      generated name), so dynamically-added rows match the page locale too. %>
  <button class="demo-trigger" type="button" data-bulk-demo="add"
          data-bulk-add-name="<%= t("components.bulk_select.demo.add_name_template") %>"
          data-bulk-add-role="<%= t("components.bulk_select.demo.add_role") %>"
          data-bulk-add-label="<%= t("components.bulk_select.demo.add_row_label") %>">
    <%= t("components.bulk_select.demo.add_row") %>
  </button>

  <%# Sticky batch action bar. It carries role="toolbar", so stimeo--toolbar is composed
      onto it for the arrow-key movement and single tab stop that role calls for. %>
  <div class="bulk-demo__bar" data-stimeo--bulk-select-target="bar" hidden
       role="toolbar" data-controller="stimeo--toolbar"
       aria-label="<%= t("components.bulk_select.demo.bar_label") %>">
    <span class="bulk-demo__count">
      <span data-stimeo--bulk-select-target="count">0</span>
      <%= t("components.bulk_select.demo.selected_suffix") %>
    </span>
    <button class="demo-trigger" type="button"
            data-stimeo--bulk-select-target="selectAllPages"
            data-stimeo--toolbar-target="control"
            data-action="click->stimeo--bulk-select#selectAllPages">
      <%= t("components.bulk_select.demo.select_all_pages") %>
    </button>
    <button class="demo-trigger" type="button"
            data-stimeo--toolbar-target="control"
            data-action="click->stimeo--bulk-select#clear">
      <%= t("components.bulk_select.demo.clear") %>
    </button>
  </div>

  <%# Shown only while the whole set is selected. CSS reads data-all-pages on the
      root, so the demo needs no script to keep this in step with the mode. %>
  <p class="bulk-demo__all-pages-note"><%= t("components.bulk_select.demo.all_pages_note") %></p>
</div>

/*
 * Presentation-only styles for the bulk-select demo.
 * The library toggles the bar's hidden attribute, the select-all indeterminate
 * state, and data-selected-count; this CSS owns the table and sticky bar styling.
 */

.bulk-demo {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 36rem;
}

.bulk-demo__table {
  width: 100%;
  border-collapse: collapse;
}

.bulk-demo__table th,
.bulk-demo__table td {
  padding: 0.5rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.bulk-demo__bar {
  position: sticky;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--color-primary);
  border-radius: 0.5rem;
  background: var(--color-primary-soft);
  color: var(--vital-800);
}

.bulk-demo__bar[hidden] {
  display: none;
}

.bulk-demo__count {
  font-weight: 600;
  margin-right: auto;
}

.bulk-demo__context {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/*
 * The all-pages note belongs to the mode, not to the selection: the controller
 * writes data-all-pages on the root, so the note follows it without any script.
 */
.bulk-demo__all-pages-note {
  margin: 0;
  padding: 0.5rem 0.7rem;
  border-radius: 0.4rem;
  background: var(--color-primary-soft);
  color: var(--vital-800);
  font-size: 0.9rem;
}

.bulk-demo:not([data-all-pages="true"]) .bulk-demo__all-pages-note {
  display: none;
}

// Consumer-side JS for the bulk-select demo (demo-only).
// Demonstrates that rows added after connect are handled by the controller's
// delegated change listener — no per-row wiring needed. The "Add row" button
// appends a new row; checking it updates the count and bar just like the rest.
const tbody = document.querySelector("[data-bulk-demo='rows']");
const addButton = document.querySelector("[data-bulk-demo='add']");

// Idempotent: Turbo can re-run this inline module on navigation, so wire once (keyed on
// the Add-row button). Both listeners attach to elements inside the demo that are
// discarded with the <body> on a Turbo visit, so they are torn down rather than stacked.
// The marker is a property, not an attribute: Turbo copies attributes into its page
// snapshot, so an attribute one comes back set on a restored page whose elements carry
// no listeners.
if (tbody && addButton && !addButton.demoWired) {
  addButton.demoWired = true;
  let nextId = tbody.querySelectorAll("tr").length + 1;

  // Localized templates passed from the ERB via data attributes ({n} = row number,
  // {name} = the generated name), so appended rows match the page locale just like
  // the server-rendered ones.
  const nameTemplate = addButton.dataset.bulkAddName ?? "New person {n}";
  const role = addButton.dataset.bulkAddRole ?? "Member";
  const labelTemplate = addButton.dataset.bulkAddLabel ?? "Select {name}";
  addButton.addEventListener("click", () => {
    const name = nameTemplate.replace("{n}", String(nextId));
    const label = labelTemplate.replace("{name}", name);
    const tr = document.createElement("tr");
    tr.innerHTML =
      `<td><input type="checkbox" data-stimeo--bulk-select-target="item"` +
      ` aria-label="${label}"></td>` +
      `<td>${name}</td><td>${role}</td>`;
    tbody.appendChild(tr);
    nextId += 1;
  });

  // Example of reacting to the selection-change event (analytics, enabling a button…).
  // Listen on the demo root (the controller element the event is dispatched on), not
  // document: a document listener would survive Turbo body swaps and stack up on every
  // navigate-away→back, whereas this is torn down with the body.
  addButton.closest(".bulk-demo")?.addEventListener("stimeo--bulk-select:change", (event) => {
    console.log(`[bulk-select] count=${event.detail.count} allPages=${event.detail.allPages}`);
  });
}