livebook/lib/livebook_web/live/session_live/section_component.ex

defmodule LivebookWeb.SessionLive.SectionComponent do
  use LivebookWeb, :live_component

  def render(assigns) do
    ~L"""
    <div
      id="section-<%= @section_view.id %>"
      data-element="section"
      data-section-id="<%= @section_view.id %>">
      <div class="flex space-x-4 items-center" data-element="section-headline">
        <h2 class="flex-grow text-gray-800 font-semibold text-2xl px-1 -ml-1 rounded-lg border  border-transparent hover:border-blue-200 focus:border-blue-300"
          data-element="section-name"
          id="section-<%= @section_view.id %>-name"
          contenteditable
          spellcheck="false"
          phx-blur="set_section_name"
          phx-value-section_id="<%= @section_view.id %>"
          phx-hook="ContentEditable"
          data-update-attribute="phx-value-name"><%= @section_view.name %></h2>
          <%# ^ Note it's important there's no space between <h2> and </h2>
            because we want the content to exactly match section name. %>
        <div class="flex space-x-2 items-center" data-element="section-actions">
          <span class="tooltip top" aria-label="Link">
            <a href="#section-<%= @section_view.id %>" class="icon-button">
              <%= remix_icon("link", class: "text-xl") %>
            </a>
          </span>
          <span class="tooltip top" aria-label="Move up">
            <button class="icon-button"
              phx-click="move_section"
              phx-value-section_id="<%= @section_view.id %>"
              phx-value-offset="-1">
              <%= remix_icon("arrow-up-s-line", class: "text-xl") %>
            </button>
          </span>
          <span class="tooltip top" aria-label="Move down">
            <button class="icon-button"
              phx-click="move_section"
              phx-value-section_id="<%= @section_view.id %>"
              phx-value-offset="1">
              <%= remix_icon("arrow-down-s-line", class: "text-xl") %>
            </button>
          </span>
          <span class="tooltip top" aria-label="Delete">
            <button class="icon-button" phx-click="delete_section" phx-value-section_id="<%= @section_view.id %>" tabindex="-1">
              <%= remix_icon("delete-bin-6-line", class: "text-xl") %>
            </button>
          </span>
        </div>
      </div>
      <div class="container">
        <div class="flex flex-col space-y-1">
          <%= for {cell_view, index} <- Enum.with_index(@section_view.cell_views) do %>
            <%= live_component @socket, LivebookWeb.SessionLive.InsertButtonsComponent,
                  id: "#{@section_view.id}:#{index}",
                  persistent: false,
                  section_id: @section_view.id,
                  insert_cell_index: index,
                  insert_section_index: nil %>
            <%= live_component @socket, LivebookWeb.SessionLive.CellComponent,
                  id: cell_view.id,
                  session_id: @session_id,
                  cell_view: cell_view %>
          <% end %>
          <%= live_component @socket, LivebookWeb.SessionLive.InsertButtonsComponent,
                id: "#{@section_view.id}:last",
                persistent: @section_view.cell_views == [],
                section_id: @section_view.id,
                insert_cell_index: length(@section_view.cell_views),
                insert_section_index: @index + 1 %>
        </div>
      </div>
    </div>
    """
  end
end