themeLabel) { return $this->t('Uninstall %theme theme', ['%theme' => $this->themeLabel]); } return $this->t('Uninstall theme'); } /** * {@inheritdoc} */ public function getConfirmText(): TranslatableMarkup { return $this->t('Uninstall'); } /** * {@inheritdoc} */ public function getCancelUrl(): Url { return new Url('system.themes_page'); } /** * {@inheritdoc} */ public function getDescription(): TranslatableMarkup { return $this->t('Would you like to continue with uninstalling the above?'); } /** * {@inheritdoc} */ public function getFormId(): string { return 'system_theme_uninstall_confirm_form'; } /** * {@inheritdoc} */ public function buildForm(array $form, FormStateInterface $form_state, #[MapQueryParameter] string $theme = ''): RedirectResponse|array { if (empty($theme)) { throw new AccessDeniedHttpException(); } // Get current list of themes. $themes = $this->themeHandler->listInfo(); if (empty($themes[$theme])) { $this->messenger()->addError($this->t('The %theme theme was not found.', ['%theme' => $theme])); return new RedirectResponse($this->getCancelUrl()->toString()); } $this->themeLabel = $themes[$theme]->info['name']; $config = $this->config('system.theme'); if ($theme === $config->get('default')) { $this->messenger()->addError($this->t('%theme is the default theme and cannot be uninstalled.', ['%theme' => $themes[$theme]->info['name']])); return new RedirectResponse($this->getCancelUrl()->toString()); } if ($theme === $config->get('admin')) { $this->messenger()->addError($this->t('%theme is the admin theme and cannot be uninstalled.', ['%theme' => $themes[$theme]->info['name']])); return new RedirectResponse($this->getCancelUrl()->toString()); } $theme_info = $themes[$theme]; $dependent_themes = []; if (!empty($theme_info->sub_themes)) { foreach ($theme_info->sub_themes as $sub_theme => $sub_label) { if (!empty($themes[$sub_theme]->status)) { $dependent_themes[] = $sub_label; } } } if (!empty($dependent_themes)) { $this->messenger()->addError($this->t('%theme cannot be uninstalled because the following themes depend on it: %themes', [ '%theme' => $theme_info->info['name'], '%themes' => implode(', ', $dependent_themes), ])); return new RedirectResponse($this->getCancelUrl()->toString()); } $form['text']['#markup'] = '

' . $this->t('The %theme theme will be completely uninstalled from your site, and all data from this theme will be lost!', ['%theme' => $theme_info->info['name']]) . '

'; // List the dependent entities. $this->addDependencyListsToForm($form, 'theme', [$theme], $this->configManager, $this->entityTypeManager); $form['theme'] = [ '#type' => 'value', '#value' => $theme, ]; return parent::buildForm($form, $form_state); } /** * {@inheritdoc} */ public function submitForm(array &$form, FormStateInterface $form_state): void { $themes = $this->themeHandler->listInfo(); $theme = $form_state->getValue('theme'); $this->themeInstaller->uninstall([$form_state->getValue('theme')]); $this->messenger()->addStatus($this->t('The %theme theme has been uninstalled.', ['%theme' => $themes[$theme]->info['name']])); $form_state->setRedirectUrl($this->getCancelUrl()); } }