function menu_form_node_form_alter

Implements hook_form_BASE_FORM_ID_alter().

Adds menu item fields to the node form.

See also

menu_node_submit()

File

modules/menu/menu.module, line 683

Code

function menu_form_node_form_alter(&$form, $form_state) {
    // Generate a list of possible parents (not including this link or descendants).
    // @todo This must be handled in a #process handler.
    $link = $form['#node']->menu;
    $type = $form['#node']->type;
    // menu_parent_options() is goofy and can actually handle either a menu link
    // or a node type both as second argument. Pick based on whether there is
    // a link already (menu_node_prepare() sets mlid default to 0).
    $options = menu_parent_options(menu_get_menus(), $link['mlid'] ? $link : $type, $type);
    // If no possible parent menu items were found, there is nothing to display.
    if (empty($options)) {
        return;
    }
    $form['menu'] = array(
        '#type' => 'fieldset',
        '#title' => t('Menu settings'),
        '#access' => user_access('administer menu'),
        '#collapsible' => TRUE,
        '#collapsed' => !$link['link_title'],
        '#group' => 'additional_settings',
        '#attached' => array(
            'js' => array(
                drupal_get_path('module', 'menu') . '/menu.js',
            ),
        ),
        '#tree' => TRUE,
        '#weight' => -2,
        '#attributes' => array(
            'class' => array(
                'menu-link-form',
            ),
        ),
    );
    $form['menu']['enabled'] = array(
        '#type' => 'checkbox',
        '#title' => t('Provide a menu link'),
        '#default_value' => (int) (bool) $link['mlid'],
    );
    $form['menu']['link'] = array(
        '#type' => 'container',
        '#parents' => array(
            'menu',
        ),
        '#states' => array(
            'invisible' => array(
                'input[name="menu[enabled]"]' => array(
                    'checked' => FALSE,
                ),
            ),
        ),
    );
    // Populate the element with the link data.
    foreach (array(
        'mlid',
        'module',
        'hidden',
        'has_children',
        'customized',
        'options',
        'expanded',
        'hidden',
        'parent_depth_limit',
    ) as $key) {
        $form['menu']['link'][$key] = array(
            '#type' => 'value',
            '#value' => $link[$key],
        );
    }
    $form['menu']['link']['link_title'] = array(
        '#type' => 'textfield',
        '#title' => t('Menu link title'),
        '#maxlength' => 255,
        '#default_value' => $link['link_title'],
    );
    $form['menu']['link']['description'] = array(
        '#type' => 'textarea',
        '#title' => t('Description'),
        '#default_value' => isset($link['options']['attributes']['title']) ? $link['options']['attributes']['title'] : '',
        '#rows' => 1,
        '#description' => t('Shown when hovering over the menu link.'),
    );
    $default = $link['mlid'] ? $link['menu_name'] . ':' . $link['plid'] : variable_get('menu_parent_' . $type, 'main-menu:0');
    // If the current parent menu item is not present in options, use the first
    // available option as default value.
    // @todo User should not be allowed to access menu link settings in such a
    // case.
    if (!isset($options[$default])) {
        $array = array_keys($options);
        $default = reset($array);
    }
    $form['menu']['link']['parent'] = array(
        '#type' => 'select',
        '#title' => t('Parent item'),
        '#default_value' => $default,
        '#options' => $options,
        '#attributes' => array(
            'class' => array(
                'menu-parent-select',
            ),
        ),
    );
    // Get number of items in all possible parent menus so the weight selector is
    // sized appropriately.
    $menu_names = array_keys(menu_get_menus());
    $menu_options = array();
    foreach ($menu_names as $menu_name) {
        if (isset($options[$menu_name . ':0'])) {
            $menu_options[] = $menu_name;
        }
    }
    // Make sure that we always have values in menu_options.
    $menu_options = !empty($menu_options) ? $menu_options : $menu_names;
    $form['menu']['link']['weight'] = array(
        '#type' => 'weight',
        '#title' => t('Weight'),
        '#delta' => _menu_get_menu_weight_delta($menu_options),
        '#default_value' => $link['weight'],
        '#description' => t('Menu links with smaller weights are displayed before links with larger weights.'),
    );
}