function BookNavigationBlock::blockForm

Overrides BlockPluginTrait::blockForm

File

core/modules/book/src/Plugin/Block/BookNavigationBlock.php, line 97

Class

BookNavigationBlock

Provides a 'Book navigation' block.

Namespace

Code

public function blockForm($form, FormStateInterface $form_state) {
    $options = [
        'all pages' => $this->t('Show block on all pages'),
        'book pages' => $this->t('Show block only on book pages'),
    ];
    $form['book_block_mode'] = [
        '#type' => 'radios',
        '#title' => $this->t('Book navigation block display'),
        '#options' => $options,
        '#default_value' => $this->configuration['block_mode'],
        '#description' => $this->t("If <em>Show block on all pages</em> is selected, the block will contain the automatically generated menus for all of the site's books. If <em>Show block only on book pages</em> is selected, the block will contain only the one menu corresponding to the current page's book. In this case, if the current page is not in a book, no block will be displayed. The <em>Page specific visibility settings</em> or other visibility settings can be used in addition to selectively display this block."),
    ];
    return $form;
}