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1 <?php
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2
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3 namespace Drupal\system\Controller;
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4
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5 use Drupal\Core\Cache\CacheableMetadata;
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6 use Drupal\Core\Controller\ControllerBase;
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7 use Drupal\Core\Extension\ThemeHandlerInterface;
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8 use Drupal\Core\Form\FormBuilderInterface;
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9 use Drupal\Core\Menu\MenuLinkTreeInterface;
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10 use Drupal\Core\Menu\MenuTreeParameters;
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11 use Drupal\Core\Theme\ThemeAccessCheck;
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12 use Drupal\Core\Url;
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13 use Drupal\system\SystemManager;
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14 use Symfony\Component\DependencyInjection\ContainerInterface;
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15
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16 /**
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17 * Returns responses for System routes.
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18 */
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19 class SystemController extends ControllerBase {
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20
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21 /**
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22 * System Manager Service.
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23 *
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24 * @var \Drupal\system\SystemManager
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25 */
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26 protected $systemManager;
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27
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28 /**
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29 * The theme access checker service.
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30 *
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31 * @var \Drupal\Core\Theme\ThemeAccessCheck
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32 */
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33 protected $themeAccess;
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34
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35 /**
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36 * The form builder service.
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37 *
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38 * @var \Drupal\Core\Form\FormBuilderInterface
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39 */
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40 protected $formBuilder;
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41
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42 /**
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43 * The theme handler service.
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44 *
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45 * @var \Drupal\Core\Extension\ThemeHandlerInterface
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46 */
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47 protected $themeHandler;
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48
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49 /**
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50 * The menu link tree service.
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51 *
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52 * @var \Drupal\Core\Menu\MenuLinkTreeInterface
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53 */
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54 protected $menuLinkTree;
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55
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56 /**
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57 * Constructs a new SystemController.
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58 *
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59 * @param \Drupal\system\SystemManager $systemManager
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60 * System manager service.
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61 * @param \Drupal\Core\Theme\ThemeAccessCheck $theme_access
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62 * The theme access checker service.
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63 * @param \Drupal\Core\Form\FormBuilderInterface $form_builder
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64 * The form builder.
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65 * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
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66 * The theme handler.
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67 * @param \Drupal\Core\Menu\MenuLinkTreeInterface $menu_link_tree
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68 * The menu link tree service.
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69 */
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70 public function __construct(SystemManager $systemManager, ThemeAccessCheck $theme_access, FormBuilderInterface $form_builder, ThemeHandlerInterface $theme_handler, MenuLinkTreeInterface $menu_link_tree) {
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71 $this->systemManager = $systemManager;
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72 $this->themeAccess = $theme_access;
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73 $this->formBuilder = $form_builder;
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74 $this->themeHandler = $theme_handler;
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75 $this->menuLinkTree = $menu_link_tree;
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76 }
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77
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78 /**
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79 * {@inheritdoc}
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80 */
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81 public static function create(ContainerInterface $container) {
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82 return new static(
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83 $container->get('system.manager'),
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84 $container->get('access_check.theme'),
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85 $container->get('form_builder'),
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86 $container->get('theme_handler'),
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87 $container->get('menu.link_tree')
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88 );
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89 }
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90
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91 /**
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92 * Provide the administration overview page.
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93 *
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94 * @param string $link_id
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95 * The ID of the administrative path link for which to display child links.
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96 *
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97 * @return array
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98 * A renderable array of the administration overview page.
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99 */
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100 public function overview($link_id) {
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101 // Check for status report errors.
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102 if ($this->systemManager->checkRequirements() && $this->currentUser()->hasPermission('administer site configuration')) {
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103 $this->messenger()->addError($this->t('One or more problems were detected with your Drupal installation. Check the <a href=":status">status report</a> for more information.', [':status' => $this->url('system.status')]));
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104 }
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105 // Load all menu links below it.
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106 $parameters = new MenuTreeParameters();
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107 $parameters->setRoot($link_id)->excludeRoot()->setTopLevelOnly()->onlyEnabledLinks();
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108 $tree = $this->menuLinkTree->load(NULL, $parameters);
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109 $manipulators = [
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110 ['callable' => 'menu.default_tree_manipulators:checkAccess'],
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111 ['callable' => 'menu.default_tree_manipulators:generateIndexAndSort'],
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112 ];
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113 $tree = $this->menuLinkTree->transform($tree, $manipulators);
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114 $tree_access_cacheability = new CacheableMetadata();
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115 $blocks = [];
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116 foreach ($tree as $key => $element) {
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117 $tree_access_cacheability = $tree_access_cacheability->merge(CacheableMetadata::createFromObject($element->access));
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118
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119 // Only render accessible links.
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120 if (!$element->access->isAllowed()) {
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121 continue;
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122 }
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123
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124 $link = $element->link;
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125 $block['title'] = $link->getTitle();
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126 $block['description'] = $link->getDescription();
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127 $block['content'] = [
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128 '#theme' => 'admin_block_content',
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129 '#content' => $this->systemManager->getAdminBlock($link),
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130 ];
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131
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132 if (!empty($block['content']['#content'])) {
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133 $blocks[$key] = $block;
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134 }
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135 }
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136
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137 if ($blocks) {
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138 ksort($blocks);
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139 $build = [
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140 '#theme' => 'admin_page',
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141 '#blocks' => $blocks,
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142 ];
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143 $tree_access_cacheability->applyTo($build);
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144 return $build;
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145 }
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146 else {
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147 $build = [
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148 '#markup' => $this->t('You do not have any administrative items.'),
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149 ];
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150 $tree_access_cacheability->applyTo($build);
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151 return $build;
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152 }
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153 }
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154
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155 /**
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156 * Sets whether the admin menu is in compact mode or not.
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157 *
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158 * @param string $mode
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159 * Valid values are 'on' and 'off'.
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160 *
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161 * @return \Symfony\Component\HttpFoundation\RedirectResponse
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162 */
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163 public function compactPage($mode) {
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164 user_cookie_save(['admin_compact_mode' => ($mode == 'on')]);
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165 return $this->redirect('<front>');
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166 }
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167
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168 /**
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169 * Provides a single block from the administration menu as a page.
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170 */
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171 public function systemAdminMenuBlockPage() {
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172 return $this->systemManager->getBlockContents();
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173 }
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174
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175 /**
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176 * Returns a theme listing.
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177 *
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178 * @return string
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179 * An HTML string of the theme listing page.
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180 *
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181 * @todo Move into ThemeController.
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182 */
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183 public function themesPage() {
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184 $config = $this->config('system.theme');
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185 // Get all available themes.
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186 $themes = $this->themeHandler->rebuildThemeData();
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187 uasort($themes, 'system_sort_modules_by_info_name');
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188
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189 $theme_default = $config->get('default');
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190 $theme_groups = ['installed' => [], 'uninstalled' => []];
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191 $admin_theme = $config->get('admin');
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192 $admin_theme_options = [];
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193
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194 foreach ($themes as &$theme) {
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195 if (!empty($theme->info['hidden'])) {
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196 continue;
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197 }
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198 $theme->is_default = ($theme->getName() == $theme_default);
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199 $theme->is_admin = ($theme->getName() == $admin_theme || ($theme->is_default && $admin_theme == '0'));
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200
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201 // Identify theme screenshot.
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202 $theme->screenshot = NULL;
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203 // Create a list which includes the current theme and all its base themes.
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204 if (isset($themes[$theme->getName()]->base_themes)) {
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205 $theme_keys = array_keys($themes[$theme->getName()]->base_themes);
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206 $theme_keys[] = $theme->getName();
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207 }
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208 else {
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209 $theme_keys = [$theme->getName()];
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210 }
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211 // Look for a screenshot in the current theme or in its closest ancestor.
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212 foreach (array_reverse($theme_keys) as $theme_key) {
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213 if (isset($themes[$theme_key]) && file_exists($themes[$theme_key]->info['screenshot'])) {
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214 $theme->screenshot = [
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215 'uri' => $themes[$theme_key]->info['screenshot'],
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216 'alt' => $this->t('Screenshot for @theme theme', ['@theme' => $theme->info['name']]),
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217 'title' => $this->t('Screenshot for @theme theme', ['@theme' => $theme->info['name']]),
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218 'attributes' => ['class' => ['screenshot']],
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219 ];
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220 break;
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221 }
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222 }
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223
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224 if (empty($theme->status)) {
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225 // Ensure this theme is compatible with this version of core.
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226 $theme->incompatible_core = !isset($theme->info['core']) || ($theme->info['core'] != \DRUPAL::CORE_COMPATIBILITY);
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227 // Require the 'content' region to make sure the main page
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228 // content has a common place in all themes.
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229 $theme->incompatible_region = !isset($theme->info['regions']['content']);
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230 $theme->incompatible_php = version_compare(phpversion(), $theme->info['php']) < 0;
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231 // Confirm that all base themes are available.
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232 $theme->incompatible_base = (isset($theme->info['base theme']) && !($theme->base_themes === array_filter($theme->base_themes)));
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233 // Confirm that the theme engine is available.
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234 $theme->incompatible_engine = isset($theme->info['engine']) && !isset($theme->owner);
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235 }
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236 $theme->operations = [];
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237 if (!empty($theme->status) || !$theme->incompatible_core && !$theme->incompatible_php && !$theme->incompatible_base && !$theme->incompatible_engine) {
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238 // Create the operations links.
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239 $query['theme'] = $theme->getName();
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240 if ($this->themeAccess->checkAccess($theme->getName())) {
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241 $theme->operations[] = [
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242 'title' => $this->t('Settings'),
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243 'url' => Url::fromRoute('system.theme_settings_theme', ['theme' => $theme->getName()]),
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244 'attributes' => ['title' => $this->t('Settings for @theme theme', ['@theme' => $theme->info['name']])],
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245 ];
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246 }
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247 if (!empty($theme->status)) {
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248 if (!$theme->is_default) {
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249 $theme_uninstallable = TRUE;
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250 if ($theme->getName() == $admin_theme) {
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251 $theme_uninstallable = FALSE;
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252 }
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253 // Check it isn't the base of theme of an installed theme.
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254 foreach ($theme->required_by as $themename => $dependency) {
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255 if (!empty($themes[$themename]->status)) {
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256 $theme_uninstallable = FALSE;
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257 }
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258 }
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259 if ($theme_uninstallable) {
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260 $theme->operations[] = [
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261 'title' => $this->t('Uninstall'),
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262 'url' => Url::fromRoute('system.theme_uninstall'),
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263 'query' => $query,
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264 'attributes' => ['title' => $this->t('Uninstall @theme theme', ['@theme' => $theme->info['name']])],
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265 ];
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266 }
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267 $theme->operations[] = [
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268 'title' => $this->t('Set as default'),
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269 'url' => Url::fromRoute('system.theme_set_default'),
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270 'query' => $query,
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271 'attributes' => ['title' => $this->t('Set @theme as default theme', ['@theme' => $theme->info['name']])],
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272 ];
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273 }
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274 $admin_theme_options[$theme->getName()] = $theme->info['name'];
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275 }
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276 else {
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277 $theme->operations[] = [
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278 'title' => $this->t('Install'),
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279 'url' => Url::fromRoute('system.theme_install'),
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280 'query' => $query,
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281 'attributes' => ['title' => $this->t('Install @theme theme', ['@theme' => $theme->info['name']])],
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282 ];
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283 $theme->operations[] = [
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284 'title' => $this->t('Install and set as default'),
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285 'url' => Url::fromRoute('system.theme_set_default'),
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286 'query' => $query,
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287 'attributes' => ['title' => $this->t('Install @theme as default theme', ['@theme' => $theme->info['name']])],
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288 ];
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289 }
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290 }
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291
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292 // Add notes to default and administration theme.
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293 $theme->notes = [];
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294 if ($theme->is_default) {
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295 $theme->notes[] = $this->t('default theme');
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296 }
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297 if ($theme->is_admin) {
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298 $theme->notes[] = $this->t('administration theme');
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299 }
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300
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301 // Sort installed and uninstalled themes into their own groups.
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302 $theme_groups[$theme->status ? 'installed' : 'uninstalled'][] = $theme;
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303 }
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304
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305 // There are two possible theme groups.
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306 $theme_group_titles = [
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307 'installed' => $this->formatPlural(count($theme_groups['installed']), 'Installed theme', 'Installed themes'),
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308 ];
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309 if (!empty($theme_groups['uninstalled'])) {
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310 $theme_group_titles['uninstalled'] = $this->formatPlural(count($theme_groups['uninstalled']), 'Uninstalled theme', 'Uninstalled themes');
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311 }
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312
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313 uasort($theme_groups['installed'], 'system_sort_themes');
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314 $this->moduleHandler()->alter('system_themes_page', $theme_groups);
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315
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316 $build = [];
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317 $build[] = [
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318 '#theme' => 'system_themes_page',
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319 '#theme_groups' => $theme_groups,
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320 '#theme_group_titles' => $theme_group_titles,
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321 ];
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322 $build[] = $this->formBuilder->getForm('Drupal\system\Form\ThemeAdminForm', $admin_theme_options);
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323
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324 return $build;
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325 }
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326
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327 }
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