<?php
// $Id$

/**
 * Implementation of hook_block();
 */
function dynamic_taxonomy_block($op = 'list', $delta = 0, $edit = array()) {
  switch ($op) {
    case 'list':
      $blocks[0]['info']  = t('Dynamic Taxonomy');
      $blocks[0]['cache'] = BLOCK_NO_CACHE;
      return $blocks;

    case 'configure':
      $form['dynamic_taxonomy_vid'] = array(
        '#type'          => 'radios',
        '#title'         => t('Select the vocabulary to list'),
        '#default_value' => variable_get('dynamic_taxonomy_vid', 1),
        '#options'       => dynamic_taxonomy_get_vocabularies(),
      );
      return $form;

    case 'save':
      variable_set('dynamic_taxonomy_vid', (int) $edit['dynamic_taxonomy_vid']);
      break;

    case 'view':
      $vid              = variable_get('dynamic_taxonomy_vid', 1);
      $tree             = dynamic_taxonomy_get_terms($vid);
      $block['content'] = theme('item_list', $tree);
      return $block;
  }
}

/**
 * Get all vocabularies;
 */
function dynamic_taxonomy_get_vocabularies() {
  $result = db_query('SELECT vid, name from {vocabulary}');
  while ($item = db_fetch_object($result)) {
    $items[$item->vid] = $item->name;
  }
  return $items;
}

function dynamic_taxonomy_get_terms($vid = null) {
  if ($vid != null) {
    $tree = taxonomy_get_tree($vid);
    foreach ($tree as $term) {
      $items[$term->tid] = $term->name;
    }
    return $items;
  }
  return null;
}