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   1  <?php
   2  // $Id: nid.inc,v 1.8.2.3 2010/01/29 20:18:25 merlinofchaos Exp $
   3  
   4  /**
   5   * @file
   6   *
   7   * Plugin to provide an argument handler for a node id
   8   */
   9  
  10  /**
  11   * Plugins are described by creating a $plugin array which will be used
  12   * by the system that includes this file.
  13   */
  14  $plugin = array(
  15    'title' => t("Node: ID"),
  16    'keyword' => 'node',
  17    'description' => t('Creates a node context from a node ID argument.'),
  18    'context' => 'ctools_argument_nid_context',
  19    'placeholder form' => array(
  20      '#type' => 'textfield',
  21      '#description' => t('Enter the node ID of a node for this argument'),
  22    ),
  23  );
  24  
  25  /**
  26   * Discover if this argument gives us the node we crave.
  27   */
  28  function ctools_argument_nid_context($arg = NULL, $conf = NULL, $empty = FALSE) {
  29    // If unset it wants a generic, unfilled context.
  30    if ($empty) {
  31      return ctools_context_create_empty('node');
  32    }
  33  
  34    // We can accept either a node object or a pure nid.
  35    if (is_object($arg)) {
  36      return ctools_context_create('node', $arg);
  37    }
  38  
  39    if (!is_numeric($arg)) {
  40      return FALSE;
  41    }
  42  
  43    $node = node_load($arg);
  44    if (!$node) {
  45      return FALSE;
  46    }
  47  
  48    return ctools_context_create('node', $node);
  49  }
  50