<?php

/**
 * @file
 * Definition of views_plugin_argument_default_user.
 */

/**
 * Default argument plugin to extract a user via menu_get_object.
 */
class views_plugin_argument_default_user extends views_plugin_argument_default {

  /**
   * {@inheritdoc}
   */
  public function option_definition() {
    $options = parent::option_definition();
    $options['user'] = array('default' => '', 'bool' => TRUE, 'translatable' => FALSE);

    return $options;
  }

  /**
   * {@inheritdoc}
   */
  public function options_form(&$form, &$form_state) {
    $form['user'] = array(
      '#type' => 'checkbox',
      '#title' => t('Also look for a node and use the node author'),
      '#default_value' => $this->options['user'],
    );
  }

  /**
   * {@inheritdoc}
   */
  public function convert_options(&$options) {
    if (!isset($options['user']) && isset($this->argument->options['default_argument_user'])) {
      $options['user'] = $this->argument->options['default_argument_user'];
    }
  }

  /**
   * {@inheritdoc}
   */
  public function get_argument() {
    foreach (range(1, 3) as $i) {
      $user = menu_get_object('user', $i);
      if (!empty($user)) {
        return $user->uid;
      }
    }

    foreach (range(1, 3) as $i) {
      $user = menu_get_object('user_uid_optional', $i);
      if (!empty($user)) {
        return $user->uid;
      }
    }

    if (!empty($this->options['user'])) {
      foreach (range(1, 3) as $i) {
        $node = menu_get_object('node', $i);
        if (!empty($node)) {
          return $node->uid;
        }
      }
    }

    if (arg(0) == 'user' && is_numeric(arg(1))) {
      return arg(1);
    }

    if (!empty($this->options['user'])) {
      if (arg(0) == 'node' && is_numeric(arg(1))) {
        $node = node_load(arg(1));
        if ($node) {
          return $node->uid;
        }
      }
    }

    // If the current page is a view that takes uid as an argument, return the
    // uid.
    $view = views_get_page_view();

    if ($view && isset($view->argument['uid'])) {
      return $view->argument['uid']->argument;
    }
  }

}
