Adding Rails Indeterminate Checkbox variant doc

playbook/app/pb_kits/playbook/pb_checkbox/checkbox.html.erb

@@ -6,12 +6,12 @@
                 ) do %>
   <%= content.presence || object.input %>
   <% if object.indeterminate %>
-    <span class="pb_checkbox_indeterminate">
+    <span data-pb-checkbox-icon-span="true" class="pb_checkbox_indeterminate">
       <%= pb_rails("icon", props: { icon: "minus", classname: "indeterminate_icon", fixed_width: true}) %>
       <%= pb_rails("icon", props: { icon: "check", classname: "check_icon hidden", fixed_width: true}) %>
     </span>
   <% else %>
-    <span class="pb_checkbox_checkmark">
+    <span data-pb-checkbox-icon-span="true" class="pb_checkbox_checkmark">
       <%= pb_rails("icon", props: { icon: "check", classname: "check_icon", fixed_width: true}) %>
       <%= pb_rails("icon", props: { icon: "minus", classname: "indeterminate_icon hidden", fixed_width: true}) %>
     </span>

playbook/app/pb_kits/playbook/pb_checkbox/checkbox.rb

@@ -18,10 +18,6 @@ class Checkbox < Playbook::KitBase
       prop :form_spacing, type: Playbook::Props::Boolean,
                           default: false
 
-      def checked_html
-        checked ? "checked='true'" : nil
-      end
-
       def classname
         generate_classname("pb_checkbox_kit", checked_class) + indeterminate_class + error_class
       end

playbook/app/pb_kits/playbook/pb_checkbox/docs/_checkbox_indeterminate.html.erb

@@ -1,7 +1,84 @@
-<%= pb_rails("checkbox" , props: {
-  text: "Select ",
-  value: "checkbox-value",
-  name: "main",
-  indeterminate: true,
-  id: "test-indeterminate-js"
-}) %>
+<% checkboxes = [
+  { name: 'Coffee', id: 'coffee', checked: false },
+  { name: 'Ice Cream', id: 'ice-cream', checked: false },
+  { name: 'Chocolate', id: 'chocolate', checked: true }
+] %>
+
+<%= pb_rails("table", props: { container: false, size: "md" }) do %>
+  <thead>
+    <tr>
+      <th>
+        <%= pb_rails("checkbox", props: {
+          checked: true,
+          text: "Uncheck All",
+          value: "checkbox-value",
+          name: "main-checkbox",
+          indeterminate: true,
+          id: "indeterminate-checkbox"
+        }) %>
+      </th>
+    </tr>
+  </thead>
+
+  <tbody>
+    <% checkboxes.each do |checkbox| %>
+      <tr>
+        <td>
+          <%= pb_rails("checkbox", props: {
+            checked: checkbox[:checked],
+            text: checkbox[:name],
+            value: checkbox[:id],
+            name: "#{checkbox[:id]}-indeterminate-checkbox",
+            id: "#{checkbox[:id]}-indeterminate-checkbox",
+          }) %>
+        </td>
+      </tr>
+    <% end %>
+  </tbody>
+<% end %>
+
+<script>
+  document.addEventListener('DOMContentLoaded', function() {
+    const mainCheckboxWrapper = document.getElementById('indeterminate-checkbox');
+    const mainCheckbox = document.getElementsByName("main-checkbox")[0];
+    const childCheckboxes = document.querySelectorAll('input[type="checkbox"][id$="indeterminate-checkbox"]');
+
+    const updateMainCheckbox = () => {
+      // Count the number of checked child checkboxes
+      const checkedCount = Array.from(childCheckboxes).filter(cb => cb.checked).length;
+      // Determine if the main checkbox should be in an indeterminate state
+      const indeterminate = checkedCount > 0 && checkedCount < childCheckboxes.length;
+
+      // Set the main checkbox states
+      mainCheckbox.indeterminate = indeterminate;
+      mainCheckbox.checked = checkedCount > 0;
+
+      // Determine the main checkbox label based on the number of checked checkboxes
+      const text = checkedCount === 0 ? 'Check All' : 'Uncheck All';
+
+      // Determine the icon class to add and remove based on the number of checked checkboxes
+      const iconClassToAdd = checkedCount === 0 ? 'pb_checkbox_checkmark' : 'pb_checkbox_indeterminate';
+      const iconClassToRemove = checkedCount === 0 ? 'pb_checkbox_indeterminate' : 'pb_checkbox_checkmark';
+
+      // Update main checkbox label
+      mainCheckboxWrapper.getElementsByClassName('pb_body_kit')[0].textContent = text;
+
+      // Add and remove the icon class to the main checkbox wrapper
+      mainCheckboxWrapper.querySelector('[data-pb-checkbox-icon-span]').classList.add(iconClassToAdd);
+      mainCheckboxWrapper.querySelector('[data-pb-checkbox-icon-span]').classList.remove(iconClassToRemove);
+
+      // Toggle the visibility of the checkbox icon based on the indeterminate state
+      mainCheckboxWrapper.getElementsByClassName("indeterminate_icon")[0].classList.toggle('hidden', !indeterminate);
+      mainCheckboxWrapper.getElementsByClassName("check_icon")[0].classList.toggle('hidden', indeterminate);
+    };
+
+    mainCheckbox.addEventListener('change', function() {
+      childCheckboxes.forEach(cb => cb.checked = this.checked);
+      updateMainCheckbox();
+    });
+
+    childCheckboxes.forEach(cb => {
+      cb.addEventListener('change', updateMainCheckbox);
+    });
+  });
+</script>