function back_to_top_page_attachments in Back To Top 2.x

Same name and namespace in other branches

1. 8 back_to_top.module \back_to_top_page_attachments()

Implements hook_page_attachments().

File

./back_to_top.module, line 13

Adds the back to top button.

Code

function back_to_top_page_attachments(array &$attachments) {
  $config = \Drupal::config('back_to_top.settings');
  $settings = $config
    ->get();
  $button_settings = [
    'back_to_top_prevent_on_mobile' => $settings['back_to_top_prevent_on_mobile'],
    'back_to_top_prevent_in_admin' => $settings['back_to_top_prevent_in_admin'],
    'back_to_top_button_type' => $settings['back_to_top_button_type'],
    'back_to_top_button_text' => $settings['back_to_top_button_text'],
  ];
  if ($settings['back_to_top_prevent_on_mobile'] && is_mobile()) {
    return FALSE;
  }
  if ($settings['back_to_top_prevent_in_admin'] && is_adminpage()) {
    return FALSE;
  }
  if ($settings['back_to_top_prevent_in_front'] && \Drupal::service('path.matcher')
    ->isFrontPage()) {
    return FALSE;
  }
  $attachments['#attached']['library'][] = 'back_to_top/back_to_top_js';
  $attachments['#attached']['drupalSettings']['back_to_top']['back_to_top_button_trigger'] = $settings['back_to_top_button_trigger'];

  // Add stylesheet for image or text/css button.
  if ($settings['back_to_top_button_type'] == "text") {
    $attachments['#attached']['library'][] = 'back_to_top/back_to_top_text';
  }
  else {
    $attachments['#attached']['library'][] = 'back_to_top/back_to_top_icon';
  }
  $css = '';
  $hover_css = '';

  // Check variables and add placement.
  if ($settings['back_to_top_button_place'] == 2) {
    $css .= "left: 10px; ";
  }
  if ($settings['back_to_top_button_place'] == 3) {
    $css .= "left: 50%; margin-left: -50px;";
  }
  if ($settings['back_to_top_button_place'] == 4) {
    $css .= "top: 10px;";
  }
  if ($settings['back_to_top_button_place'] == 5) {
    $css .= "top: 10px; left: 10px;";
  }
  if ($settings['back_to_top_button_place'] == 6) {
    $css .= "top: 10px; left: 50%; margin-left: -50px;";
  }
  if ($settings['back_to_top_button_place'] == 7) {
    $css .= "top: 50%;";
  }
  if ($settings['back_to_top_button_place'] == 8) {
    $css .= "top: 50%; left: 10px;";
  }
  if ($settings['back_to_top_button_place'] == 9) {
    $css .= "top: 50%; left: 50%; margin-left: -50px;";
  }

  // Check variables and add color from settings - this code could be done a
  // bit nicer.
  if ($settings['back_to_top_button_type'] == "text" && $settings['back_to_top_bg_color'] !== '#F7F7F7') {
    $css .= "background: " . $settings['back_to_top_bg_color'] . ";";
  }
  if ($settings['back_to_top_button_type'] == "text" && $settings['back_to_top_border_color'] !== '#CCCCCC') {
    $css .= "border-color: " . $settings['back_to_top_border_color'] . ";";
  }
  if ($settings['back_to_top_button_type'] == "text" && $settings['back_to_top_hover_color'] !== '#EEEEEE') {
    $hover_css .= "body #backtotop:hover { background: " . $settings['back_to_top_hover_color'] . "; border-color: " . $settings['back_to_top_hover_color'] . "; }";
  }
  if ($settings['back_to_top_button_type'] == "text" && $settings['back_to_top_text_color'] !== '#333333') {
    $css .= "color: " . $settings['back_to_top_text_color'] . ";";
  }
  if ($css != '') {
    $attachments['#attached']['html_head'][] = [
      [
        '#tag' => 'style',
        '#value' => 'body #backtotop {' . $css . '}' . $hover_css,
      ],
      'css',
    ];
  }

  // Add settings to js.
  $attachments['#attached']['drupalSettings']['back_to_top'] += $button_settings;
}