function template_preprocess_file_widget_multiple

Prepares variables for multi file form widget templates.

Default template: file-widget-multiple.html.twig.

Parameters

array $variables: An associative array containing:

• element: A render element representing the widgets.

File

core/modules/file/file.module, line 1104

Code

function template_preprocess_file_widget_multiple(&$variables) {
    $element = $variables['element'];
    // Special ID and classes for draggable tables.
    $weight_class = $element['#id'] . '-weight';
    $table_id = $element['#id'] . '-table';
    // Build up a table of applicable fields.
    $headers = [];
    $headers[] = t('File information');
    if ($element['#display_field']) {
        $headers[] = [
            'data' => t('Display'),
            'class' => [
                'checkbox',
            ],
        ];
    }
    $headers[] = t('Weight');
    $headers[] = t('Operations');
    // Get our list of widgets in order (needed when the form comes back after
    // preview or failed validation).
    $widgets = [];
    foreach (Element::children($element) as $key) {
        $widgets[] =& $element[$key];
    }
    usort($widgets, '_field_multiple_value_form_sort_helper');
    $rows = [];
    foreach ($widgets as &$widget) {
        // Save the uploading row for last.
        if (empty($widget['#files'])) {
            $widget['#title'] = $element['#file_upload_title'];
            $widget['#description'] = \Drupal::service('renderer')->renderInIsolation($element['#file_upload_description']);
            continue;
        }
        // Delay rendering of the buttons, so that they can be rendered later in the
        // "operations" column.
        $operations_elements = [];
        foreach (Element::children($widget) as $key) {
            if (isset($widget[$key]['#type']) && $widget[$key]['#type'] == 'submit') {
                hide($widget[$key]);
                $operations_elements[] =& $widget[$key];
            }
        }
        // Delay rendering of the "Display" option and the weight selector, so that
        // each can be rendered later in its own column.
        if ($element['#display_field']) {
            hide($widget['display']);
        }
        hide($widget['_weight']);
        $widget['_weight']['#attributes']['class'] = [
            $weight_class,
        ];
        // Render everything else together in a column, without the normal wrappers.
        $row = [];
        $widget['#theme_wrappers'] = [];
        $row[] = \Drupal::service('renderer')->render($widget);
        // Arrange the row with the rest of the rendered columns.
        if ($element['#display_field']) {
            unset($widget['display']['#title']);
            $row[] = [
                'data' => $widget['display'],
                'class' => [
                    'checkbox',
                ],
            ];
        }
        $row[] = [
            'data' => $widget['_weight'],
        ];
        // Show the buttons that had previously been marked as hidden in this
        // preprocess function. We use show() to undo the earlier hide().
        foreach (Element::children($operations_elements) as $key) {
            show($operations_elements[$key]);
        }
        $row[] = [
            'data' => $operations_elements,
        ];
        $rows[] = [
            'data' => $row,
            'class' => isset($widget['#attributes']['class']) ? array_merge($widget['#attributes']['class'], [
                'draggable',
            ]) : [
                'draggable',
            ],
        ];
    }
    $variables['table'] = [
        '#type' => 'table',
        '#header' => $headers,
        '#rows' => $rows,
        '#attributes' => [
            'id' => $table_id,
        ],
        '#tabledrag' => [
            [
                'action' => 'order',
                'relationship' => 'sibling',
                'group' => $weight_class,
            ],
        ],
        '#access' => !empty($rows),
    ];
    $variables['element'] = $element;
}