' . t('Provides support for meta tags used to control the mobile browser experience.') . '
'; return $output; default: } } /** * Implements hook_theme(). */ function metatag_mobile_theme() { $info['metatag_mobile_android_app'] = [ 'render element' => 'element', ]; $info['metatag_mobile_ios_app'] = [ 'render element' => 'element', ]; return $info; } /** * Implements hook_page_attachments_alter(). */ function metatag_mobile_page_attachments_alter(array &$attachments) { if (isset($attachments['#attached']['html_head'])) { // A list of core tags that will be replaced, in the format: // core tag => Metatag-supplied tag // This assumes that the module's meta tags are output *before* the core // tags, if this changes then We're Going To Have A Bad Time. $dupes = [ 'MobileOptimized' => 'mobileoptimized', 'HandheldFriendly' => 'handheldfriendly', 'viewport' => 'viewport', ]; // Keep track of when the Metatag-supplied meta tags are found, so if the // core tag is also found it can be removed. $found = []; foreach ($dupes as $core_tag => $meta_tag) { foreach ($attachments['#attached']['html_head'] as $key => $item) { if (isset($item[1])) { // The Metatag values are output before core's, so skip the first item // found so it can be picked up as the dupe; this is important for the // "viewport" meta tag where both core and Metatag use the same name. if ($item[1] == $meta_tag && !isset($found[$meta_tag])) { $found[$meta_tag] = $key; } elseif ($item[1] == $core_tag && isset($found[$meta_tag])) { // @todo This ought to work, but doesn't? // $attachments['#attached']['html_head'][$key]['#access'] = FALSE; unset($attachments['#attached']['html_head'][$key]); } } } } } } /** * Theme callback for an Android app link meta tag. * * The format is (all on oneline): * */ function theme_metatag_mobile_android_app($variables) { // Pass everything through to the normal 'link' tag theme. $variables['element']['#name'] = 'alternative'; $variables['element']['#value'] = 'android-app://' . $variables['element']['#value']; return theme('metatag_link_rel', $variables); } /** * Theme callback for an iOS app link meta tag. * * The format is: * */ function theme_metatag_mobile_ios_app($variables) { // Pass everything through to the normal 'link' tag theme. $variables['element']['#name'] = 'alternative'; $variables['element']['#value'] = 'ios-app://' . $variables['element']['#value']; return theme('metatag_link_rel', $variables); }