function views_ui_standard_display_dropdown

Adds an element to select either the default display or the current display.

File

core/modules/views_ui/admin.inc, line 205

Code

function views_ui_standard_display_dropdown(&$form, FormStateInterface $form_state, $section) {
    $view = $form_state->get('view');
    $display_id = $form_state->get('display_id');
    $executable = $view->getExecutable();
    $displays = $executable->displayHandlers;
    $current_display = $executable->display_handler;
    // @todo Move this to a separate function if it's needed on any forms that
    // don't have the display dropdown.
    $form['override'] = [
        '#prefix' => '<div class="views-override clearfix form--inline views-offset-top" data-drupal-views-offset="top">',
        '#suffix' => '</div>',
        '#weight' => -1000,
        '#tree' => TRUE,
    ];
    // Add the "2 of 3" progress indicator.
    if ($form_progress = $view->getFormProgress()) {
        $arguments = $form['#title']->getArguments() + [
            '@current' => $form_progress['current'],
            '@total' => $form_progress['total'],
        ];
        $form['#title'] = t('Configure @type @current of @total: @item', $arguments);
    }
    // The dropdown should not be added when :
    // - this is the default display.
    // - there is no default shown and just one additional display (mostly page)
    //   and the current display is defaulted.
    if ($current_display->isDefaultDisplay() || $current_display->isDefaulted($section) && !\Drupal::config('views.settings')->get('ui.show.default_display') && count($displays) <= 2) {
        return;
    }
    // Determine whether any other displays have overrides for this section.
    $section_overrides = FALSE;
    $section_defaulted = $current_display->isDefaulted($section);
    foreach ($displays as $id => $display) {
        if ($id === 'default' || $id === $display_id) {
            continue;
        }
        if ($display && !$display->isDefaulted($section)) {
            $section_overrides = TRUE;
        }
    }
    $display_dropdown['default'] = $section_overrides ? t('All displays (except overridden)') : t('All displays');
    $display_dropdown[$display_id] = t('This @display_type (override)', [
        '@display_type' => $current_display->getPluginId(),
    ]);
    // Only display the revert option if we are in an overridden section.
    if (!$section_defaulted) {
        $display_dropdown['default_revert'] = t('Revert to default');
    }
    $form['override']['dropdown'] = [
        '#type' => 'select',
        // @TODO: Translators may need more context than this.
'#title' => t('For'),
        '#options' => $display_dropdown,
    ];
    if ($current_display->isDefaulted($section)) {
        $form['override']['dropdown']['#default_value'] = 'defaults';
    }
    else {
        $form['override']['dropdown']['#default_value'] = $display_id;
    }
}