<?php
// $Id$

/**
 * @file
 * Core code for uBrowser, a new way to browse and select nodes!
 *
 * uBrowser lets you browse taxonomy vocabularies like they were file systems.
 * You can browse for nodes, search them for keywords, and choose to view or
 * take an action on the node(s) you select.
 *
 * Development sponsored by the Ubercart project.  http://www.ubercart.org
 */


/*******************************************************************************
 * Hook Functions (Drupal)
 ******************************************************************************/

/**
 * Implementation of hook_menu().
 */
function ubrowser_menu($may_cache) {
  if ($may_cache) {
    // Main ubrowser URL.. returns the HTML for the uBrowser to be placed in a div.
    $items[] = array(
      'path' => 'ubrowser/main',
      'title' => t('Browse taxonomy'),
      'description' => t('Browse taxonomy like a file tree.'),
      'callback' => 'ubrowser_display',
      'access' => user_access('access content'),
      'type' => MENU_CALLBACK,
    );
    // Search URL, displays results in the node div
    $items[] = array(
      'path' => 'ubrowser/nodesearch',
      'title' => t('Search nodes'),
      'description' => t('Display search results in the node box.'),
      'callback' => 'ubrowser_nodesearch',
      'access' => user_access('access content'),
      'type' => MENU_CALLBACK,
    );
    // Let admin browse their content with uBrowser
    $items[] = array(
      'path' => 'admin/content/ubrowser',
      'title' => t('Category browser'),
      'description' => t('Browse nodes in your vocabularies using uBrowser.'),
      'callback' => 'ubrowser_admin',
      'access' => user_access('administer taxonomy'),
      'type' => MENU_NORMAL_ITEM,
    );
  }
  else {
    drupal_add_css(drupal_get_path('module', 'ubrowser') .'/ubrowser.css');
    if (is_numeric(arg(2))) {
      // URL to display nodes in the node div
      $items[] = array(
        'path' => 'ubrowser/nodes/'. arg(2),
        'title' => t('Display nodes'),
        'description' => t('Display the child nodes of a taxonomy term.'),
        'callback' => 'ubrowser_nodes',
        'callback arguments' => array(arg(2), arg(3)),
        'access' => user_access('access content'),
        'type' => MENU_CALLBACK,
      );
    }
  }

  return $items;
}


/*******************************************************************************
 * Callback Functions, Forms, and Tables
 ******************************************************************************/

/**
 * Allow admin to build a uBrowser and browse their content with it.
 */
function ubrowser_admin() {

  $output = '<p>'. t('uBrowser allows you to browse the content of your site '
           .'by taxonomy vocabulary. Use the form to build uBrowser here. The '
           .'textarea beneath the uBrowser will display the PHP to put the '
           .'browser on a page in your site.') .'</p>';

  $settings = array(
    'div' => '#ubrowser',
    'class' => 'ubrowser-div',
    'vid' => TRUE,
    'nids' => TRUE,
    'search' => TRUE,
    'view' => TRUE,
    'window' => TRUE,
    'close' => TRUE,
    'multi' => TRUE,
    'filter' => TRUE,
    'select' => TRUE,
    'categ' => TRUE,
    'nodesg' => TRUE,
    'nodepl' => TRUE,
    'code' => '#php-results',
  );

  $output .= drupal_get_form('ubrowser_builder', $settings) .'<br />'
           . ubrowser_div('ubrowser', t('Make your choices and click display.'));

  $output .= '<div style="clear: both;"></div><br />'
            .'<p><b>'. t('PHP to build this uBrowser on a page:') .'</b><br />'
            .'<textarea id="php-results" rows="8" cols="60" readonly></textarea></p>';

  return $output;
}

/**
 * Return the HTML to display the uBrowser inside a div.
 */
function ubrowser_display($settings = NULL) {
  if ($settings === NULL && (empty($_POST) || !isset($_POST['div']))) {
    drupal_goto('<front>');
  }

  /**
   * List of settings array keys and values:
   * div    = CSS selector of the div in which the uBrowser should display.
   * class  = Class to add to the div when uBrowser is loaded and remove when
   *            uBrowser is closed.
   * vid    = Vocabulary ID the uBrowser should browse.
   * nids   = String true or false to display node IDs in the node select box.
   * filter = Comma delimeted string of node types to display.
   * search = String true or false to display a node search form.
   * close  = String true or false to display a close button that wipes the div.
   * view   = String true or false to display a view button that browses
   *            to the selected node.
   * window = String current or new for which window to view nodes in.
   * categ  = String of text to replace 'category' in displays, or leave blank.
   * nodesg = String of text to replace 'node' in displays, or leave blank.
   * nodepl = String of text to replace 'nodes' in displays, or leave blank.
   * select = String of Javascript to execute on the select button
   *            (not displayed if no Javascript is set).
   * multi  = String true or false to allow users to select multiple nodes.
   */
  if ($settings === NULL) {
    $settings = array(
      'div' => $_POST['div'],
      'class' => $_POST['class'],
      'vid' => intval($_POST['vid']),
      'nids' => (($_POST['nids'] == 'true') ? '' : '/no_nids'),
      'filter' => $_POST['filter'],
      'search' => $_POST['search'],
      'close' => $_POST['close'],
      'view' => $_POST['view'],
      'window' => (($_POST['window'] == 'new') ? 'new' : 'current'),
      'categ' => ((strlen($_POST['categ']) > 0) ? $_POST['categ'] : 'category'),
      'nodesg' => ((strlen($_POST['nodesg']) > 0) ? $_POST['nodesg'] : 'node'),
      'nodepl' => ((strlen($_POST['nodepl']) > 0) ? $_POST['nodepl'] : 'nodes'),
      'select' => $_POST['select'],
      'multi' => (($_POST['multi'] == 'true') ? TRUE : FALSE),
    );
    $return_output = FALSE;
  }
  else {
    if ($settings['nids'] == 'false') {
      $settings['nids'] = '/no_nids';
    }
    else {
      $settings['nids'] = '';
    }
    if (is_null($settings['categ']) || strlen($settings['categ']) == 0) {
      $settings['categ'] = 'category';
    }
    if (is_null($settings['nodesg']) || strlen($settings['nodesg']) == 0) {
      $settings['nodesg'] = 'node';
    }
    if (is_null($settings['nodepl']) || strlen($settings['nodepl']) == 0) {
      $settings['nodepl'] = 'nodes';
    }
    $return_output = TRUE;
  }

  if ($settings['vid'] > 0) {
    $tree = taxonomy_get_tree($settings['vid']);
    $options = array();
    if ($tree && (count($tree) > 1)) {
      foreach ($tree as $term) {
        $options[$term->tid] = str_repeat('-', $term->depth) . $term->name;
      }
    }
    if (count($options) == 0) {
      $options[0] = t('No terms found.');
    }
  }

  // Get the appropriate forms into variables.
  $term_select_form = drupal_get_form('ubrowser_tree_form', $options, $settings);
  $node_select_form = drupal_get_form('ubrowser_nodes_form', NULL, $settings['categ'], $settings['nodesg'], $settings['multi']);
  $search_form = '';
  $actions_form = '';
  if ($settings['search'] == 'true') {
    $search_form = drupal_get_form('ubrowser_node_search_form');
  }
  if (strlen($settings['select']) > 0 || $settings['view'] == 'true' || $settings['close'] == 'true') {
    $actions_form = drupal_get_form('ubrowser_node_actions_form', $settings);
  }

  // Output the table with appropriate classes and IDs for uBrowser and the CSS.
  $output = '<table class="ubrowser-table"><tr>'
           .'<td id="ubrowser-tree">'. $term_select_form .'</td>'
           .'<td id="ubrowser-nodes">'. $node_select_form .'</td>'
           .'</tr><tr>'
           .'<td id="ubrowser-search">'. $search_form .'</td>'
           .'<td id="ubrowser-actions">'. $actions_form .'</td>'
           .'</tr></table>';

  if ($return_output) {
    return $output;
  }

  print $output;
  exit();
}

/**
 * Create the form for the term select box; also stores the widget settings.
 */
function ubrowser_tree_form($options, $settings = NULL) {
  if (strlen($settings['categ']) > 0) {
    $category = $settings['categ'];
  }
  else {
    $category = 'category';
  }

  $form['tid'] = array(
    '#type' => 'select',
    '#title' => t('Select a !category', array('!category' => $category)),
    '#size' => 10,                                                               
    '#options' => $options,      
    '#attributes' => array('onchange' => "load_node_select(this.value, '". base_path() ."');"),
  );                                  

  /**
   * Save the settings array as hidden input fields in the uBrowser form.
   * Settings are accessed by ID for different onclick actions:
   *   $('#edit-ub-key').val();  // Get the value of settings key using jQuery.
   */
  if (!is_null($settings)) {
    foreach ($settings as $key => $value) {
      $form['settings']['ub-'. $key] = array(
        '#type' => 'hidden',
        '#value' => $value,
      );
    }
  }

  return $form;
}

/**
 * Return the HTML for the node select box.
 */
function ubrowser_nodes($tid, $nids) {
  if ($_POST['multi'] == 'true' || $_POST['multi'] == '1') {
    $multi = TRUE;
  }
  else {
    $multi = FALSE;
  }

  if (isset($_POST['filter'])) {
    $filter = $_POST['filter'];
  }
  else {
    $filter = NULL;
  }

  if (strlen($_POST['categ']) > 0) {
    $category = $_POST['categ'];
  }
  else {
    $category = 'category';
  }

  if (strlen($_POST['nodesg']) > 0) {
    $nodesg = $_POST['nodesg'];
  }
  else {
    $nodesg = 'node';
  }

  if (strlen($_POST['nodepl']) > 0) {
    $nodepl = $_POST['nodepl'];
  }
  else {
    $nodepl = 'nodes';
  }

  if ($tid == 0) {
    $options = array(0 => t('Select a !category...'), array('!category' => $category));
  }
  else {
    $result = _ubrowser_select_nodes(array($tid), $filter);
    $options = array(0 => t('!Category contains !count !nodes!punctuation', 
                            array('!Category' => ucfirst($category),
                                  '!count' => db_num_rows($result),
                                  '!nodes' => ((db_num_rows($result) == 1) ? $nodesg : $nodepl),
                                  '!punctuation' => ((db_num_rows($result) == 0) ? '.' : ':'))));
    while($node = db_fetch_object($result)) {
      if ($nids == 'no_nids') {
        $options[$node->nid] = $node->title;
      }
      else {
        $options[$node->nid] = '('. $node->nid .') '. $node->title;
      }
    }
  }

  $output = drupal_get_form('ubrowser_nodes_form', $options, $category, $nodesg, $multi);

  print $output;
  exit();
}

/**
 * Create the form for the node select box.
 */
function ubrowser_nodes_form($options, $categ = 'category', $nodesg = 'node', $multi = FALSE) {
  if ($options === NULL) {
    $options = array(0 => t('Select a !category...', array('!category' => $categ)));
  }
  else {
    foreach ($options as $nid => $title) {
      if ($nid > 0) {
        $result = db_query("SELECT dst FROM {url_alias} WHERE src = 'node/". $nid ."'");
        if ($alias = db_fetch_object($result)) {
          $url = $alias->dst;
        }
        else {
          $url = 'node/'. $nid;
        }
        $form['unid-path-'. $nid] = array(
          '#type' => 'hidden',
          '#value' => $url,
        );
      }
    }
  }

  $form['unid'] = array(
    '#type' => 'select',
    '#multiple' => $multi,
    '#title' => t('Select a !nodesg', array('!nodesg' => $nodesg)),
    '#size' => 10,
    '#options' => $options,
  );

  return $form;
}

/**
 * Perform a search for nodes and display the results in the node box.
 */
function ubrowser_nodesearch() {
  $keys = check_plain($_POST['keys']);
  $filter = check_plain($_POST['filter']);
  $category = check_plain($_POST['categ']);
  $nodesg = check_plain($_POST['nodesg']);
  $nodepl = check_plain($_POST['nodepl']);

  if (is_null($keys) || strlen($keys) < 3) {
    print '';
    exit();
  }

  if (strlen($filter) > 0) {
    $filter = "'". str_replace(',', "','", $filter) ."'";
    $results = _ubrowser_search($keys, 'node',
                                'INNER JOIN {node} n ON n.nid = i.sid',
                                "(n.type IN ($filter))");
  }
  else {
    $results = _ubrowser_search($keys, 'node');
  }
  if (($j = count($results)) == 0) {
    $options = array(
      -1 => t('Search yielded no results for:'),
      0 => $keys,
    );
  }
  elseif ($j == 1) {
    $options = array(0 => t('Search yielded 1 result:'));
    $result = db_query("SELECT nid, title FROM {node} WHERE nid = %d", $results[0]->sid);
    if ($node = db_fetch_object($result)) {
      if ($_POST['nids'] == '/no_nids') {
        $options[$node->nid] = $node->title;
      }
      else {
        $options[$node->nid] = '('. $node->nid .') '. $node->title;
      }
    }
  } 
  else {
    $options = array(0 => t('Search yielded !count results:', array('!count' => $j)));
    foreach($results as $result) {
      $nid_array[] = $result->sid;
    }
    $result = db_query("SELECT nid, title FROM {node} WHERE nid IN (%s)", implode(',', $nid_array));
    while ($node = db_fetch_object($result)) {
      if ($_POST['nids'] == '/no_nids') {
        $options[$node->nid] = $node->title;
      }
      else {
        $options[$node->nid] = '('. $node->nid .') '. $node->title;
      }
    }
  }

  $output = drupal_get_form('ubrowser_nodes_form', $options, $category, $nodesg);
  print $output;
  exit();
}

/**
 * Create the form for the node search box.
 */
function ubrowser_node_search_form() {
  $form = array(
    '#attributes' => array('onsubmit' => 'return ubrowser_search_submit();'),
  );

  $form['usearch_keys'] = array(
    '#type' => 'textfield',
    '#size' => 10,
  );
  $form['usearch_submit'] = array(
    '#type' => 'button',
    '#value' => t('Search'),
    '#attributes' => array('onclick' => "return load_node_search('". base_path() ."');"),
  );

  return $form;
}

/**
 * Theme the node search box.
 */
function theme_ubrowser_node_search_form($form) {
  $output = '<table id="ubrowser-search-table"><tr>'
           .'<td>'. drupal_render($form['usearch_keys']) .'</td>'
           .'<td>'. drupal_render($form['usearch_submit']) .'</td>'
           .'</tr></table>';

  return $output;
}

/**
 * Create the form to display the actions buttons:
 * view   = Browses to the selected node.
 * select = Executes the select Javascript using eval().
 * close  = Empties the uBrowser div and removes its class where applicable.
 */
function ubrowser_node_actions_form($settings) {
  if ($settings['view'] == 'true') {
    $form['uview'] = array(
      '#type' => 'button',
      '#value' => t('View'),
      '#attributes' => array('onclick' => "return ubrowser_action_view('". base_path() ."');"),
    );
  }

  if (strlen($settings['select']) > 0) {
    $form['uselect'] = array(
      '#type' => 'button',
      '#value' => t('Select'),
      '#attributes' => array('onclick' => 'return ubrowser_action_select();'),
    );
  }

  if ($settings['close'] == 'true') {
    $form['uclose'] = array(
      '#type' => 'button',
      '#value' => t('Close'),
      '#attributes' => array('onclick' => 'return ubrowser_action_close();'),
    );
  }

  return $form;
}

function theme_ubrowser_node_actions_form($form) {
  $output = '<table class="ubrowser-table"><tr>'
           .'<td>'. drupal_render($form) .'</td>'
           .'</tr></table>';

  return $output;
}

/*******************************************************************************
 * Module and Helper Functions
 ******************************************************************************/

/**
 * Return the HTML for a uBrowser populated div.
 *
 * @param $settings
 *   Associate array with the keys that define settings for uBrowser... see
 *   ubrowser_button() for a complete list.
 * @return
 *   A string containing the HTML of the uBrowser div.
 */
function ubrowser($settings, $id = 'ubrowser') {
  drupal_add_css(drupal_get_path('module', 'ubrowser') .'/ubrowser.css');
  drupal_add_js(drupal_get_path('module', 'ubrowser') .'/ubrowser.js', 'module');

  $settings = ubrowser_check_settings($settings);

  $output = '<div id="'. $id .'" class="'. $settings['class'] .'">'
          . ubrowser_display($settings) .'</div>';

  return $output;
}

/**
 * Return the HTML for an empty uBrowser div.
 *
 * @param $id
 *   The ID of the generated div.
 * @param $message
 *   The message to display in the div before loading uBrowser.  Defaults to
 *   uBrowser, but can be set to NULL to display nothing.
 * @param $class
 *   An optional class you can set for the div.
 * @return
 *   A string containing the HTML of the div.
 */
function ubrowser_div($id = 'ubrowser', $message = 'uBrowser', $class = 'ubrowser-div') {
  if ($message !== NULL) {
    $message = '<em>'. $message .'</em>';
  }
  if ($class !== NULL) {
    $class = ' class="'. $class .'"';
  }

  drupal_add_css(drupal_get_path('module', 'ubrowser') .'/ubrowser.css');
  drupal_add_js(drupal_get_path('module', 'ubrowser') .'/ubrowser.js', 'module');

  return '<div id="'. $id .'"'. $class .'>'. $message .'</div>';
}

/**
 * Return the HTML for a button to display uBrowser in a div.
 *
 * I pondered how to make this work.  In the end I decided to just put the
 * Javascript in the button element itself.  An alternative was to write a
 * function out in the page and call it with a button click, but since this is
 * all transparent, I'm going to uglify the HTML and leave it like it is.
 *
 * @param $value
 *   Text displayed on the button.
 * @param $settings
 *   Associate array with the following keys that define settings for uBrowser:
 *   - div    = CSS selector of the div in which the uBrowser should display.
 *   - class  = Class to add to the div when uBrowser is loaded and remove when
 *                uBrowser is closed.
 *   - vid    = Vocabulary ID the uBrowser should browse.
 *   - nids   = String true or false to display node IDs in the node select box.
 *   - filter = Comma delimeted string of node types to display.
 *   - search = String true or false to display a node search form.
 *   - close  = String true or false to display a close button that wipes the div.
 *   - view   = String true or false to display a view button that browses
 *                to the selected node.
 *   - window = String current or new for which window to view nodes in.
 *   - categ  = String of text to replace 'category' in displays, or leave blank.
 *   - nodesg = String of text to replace 'node' in displays, or leave blank.
 *   - nodepl = String of text to replace 'nodes' in displays, or leave blank.
 *   - select = String of Javascript to execute on the select button, not
 *                displayed if no value is set.
 *   - multi  = String true or false to allow users to select multiple nodes.
 * @param $name
 *   Optional name of the button.
 * @param $id
 *   Optional id of the button.
 * @return
 *   A string containing the HTML of the button.
 */
function ubrowser_button($value, $settings, $name = NULL, $id = NULL) {
  $value = str_replace('"', '', $value);
  if (strlen($value) == 0) {
    $value = t('Display uBrowser');
  }
  if ($name !== NULL) {
    $name = ' name="'. $name .'"';
  }
  if ($id !== NULL) {
    $id = ' id="'. $id .'"';
  }

  drupal_add_css(drupal_get_path('module', 'ubrowser') .'/ubrowser.css');
  drupal_add_js(drupal_get_path('module', 'ubrowser') .'/ubrowser.js', 'module');

  $js_settings = str_replace('"', "'", drupal_to_js((object) $settings));

  $output = '<input type="button" value="'. $value .'"'. $name . $id
           .' onclick="display_ubrowser(\''. base_path() .'\', '. $js_settings
           .');" />';

  return $output;
}

/**
 * Return the settings array with any ommitted settings set to defaults.
 *
 * @param $settings
 *   The settings array.  See ubrowser_button() for available keys.
 * @return
 *   The settings array with all ommitted settings set to their defaults.
 */
function ubrowser_check_settings($settings) {
  $defaults = array(
    'class' => '',
    'nids' => '',
    'filter' => '',
    'search' => 'false',
    'close' => 'false',
    'view' => 'false',
    'select' => '',
    'multi' => 'false',
  );

  foreach($defaults as $key => $value) {
    if (!array_key_exists($key, $settings)) {
      $settings[$key] = $value;
    }
  }

  return $settings;
}

/**
 * Display a form that lets you build and display uBrowser on the fly.
 *
 * ubrowser_builder() lets you print a form to a page that can be used for
 * custom building of uBrowsers.  This is used from ubrowser_admin() to display
 * the form at admin/content/browse.
 *
 * @param $settings
 *   A settings array that specifies what to set as default settings and what
 *     to display as options on the form.  The following keys should either be
 *     set to TRUE, meaning they will be displayed on the form, or to an actual
 *     value to be used as the default value:
 *   - div    = MUST be set, cannot be TRUE.  Use a CSS selector for the div the
 *                custom built uBrowser will populate.
 *   - class  = MUST be set, cannot be TRUE.  The name of the class to add to
 *                the uBrowser div when it's loaded.
 *   - vid    = TRUE to display a select box of vocabularies, otherwise specify
 *                the vocabulary ID this uBrowser must use.
 *   - nids   = TRUE to display a checkbox for displaying node IDs, otherwise
 *                specify the string true or false.
 *   - search = TRUE to display a checkbox for displaying the search form,
 *                otherwise specify the string true or false.
 *   - view   = TRUE to display a checkbox for displaying the view button,
 *                otherwise specify the string true or false.
 *   - window = TRUE to display a checkbox for choosing the view target window,
 *                otherwise specify the string new or current.
 *   - close  = TRUE to display a checkbox for displaying the close button,
 *                otherwise specify the string true or false.
 *   - multi  = TRUE to display a checkbox for displaying the multi select box,
 *                otherwise specify the string true or false.
 *   - filter = TRUE to display a set of checkboxes to filter displayed nodes by
 *                node type; only shows node types associated with current
 *                vocabularies.  Alternately, specify a comma delimited string
 *                of node types to filter by default.
 *   - select = TRUE to display a textfield for entering Javascript for the
 *                select button, otherwise specify an empty string to not show
 *                a select button or a string of Javascript to execute.
 *   - nodesg = TRUE to display a textfield for entering the replacement text
 *                for the word 'node' in uBrowser displays.  May be a string
 *                for the default replacement, or may be left unset for 'node'.
 *   - nodepl = TRUE to display a textfield for entering the replacement text
 *                for the word 'nodes' in uBrowser displays.  May be a string
 *                for the default replacement, or may be left unset for 'nodes'.
 *   - code   = MUST be either not set (to not display code) or set to the
 *                CSS selector of a textarea to populate with the PHP code to
 *                reproduce the built uBrowser.  I can't imagine anyone else
 *                using this but figured it should be documented.
 *   - display = Optional, replacement text for the "Display uBrowser" button.
 */
function ubrowser_builder($settings) {
  $form['ubb-div'] = array(
    '#type' => 'hidden',
    '#value' => $settings['div'],
  );

  // Add the vocabulary select box
  if ($settings['vid'] === TRUE) {
    $vocabs = taxonomy_get_vocabularies();
    $options = array();
    foreach($vocabs as $vocab) {
      $options[$vocab->vid] = $vocab->name;
    }
    $form['ubb-vid'] = array(
      '#type' => 'select',
      '#title' => t('Vocabulary'),
      '#description' => t('Select which vocabulary to browse.'),
      '#options' => $options,
    );
  }
  else {
    $form['ubb-vid'] = array(
      '#type' => 'hidden',
      '#value' => $settings['vid'],
    );
  }

  // Add the node type selection boxes
  $form['filter-options'] = array(
    '#type' => 'fieldset',
    '#title' => t('Filter by node type'),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
  );

  if ($settings['filter'] === TRUE) {
    $options = array();
    $result = db_query("SELECT DISTINCT type FROM {vocabulary_node_types}");
    while ($type = db_fetch_object($result)) {
      $options[$type->type] = $type->type;
    }
    $form['filter-options']['ubb-filter'] = array(
      '#type' => 'checkboxes',
      '#title' => t('Filter results for the following node types'),
      '#description' => t('Selecting none will display all nodes.'),
      '#options' => $options,
      '#prefix' => '<span id="filter-checkboxes">',
      '#suffix' => '</span>',
    );
  }
  else {
    $form['filter-options']['ubb-filter-desc'] = array(
      '#value' => '<div>Using default filter: '. $settings['filter'] .'</div>',
    );
    $form['filter-options']['ubb-filter'] = array(
      '#type' => 'hidden',
      '#value' => $settings['filter'],
    );
  }

  // Add a select button textfield
  if ($settings['select'] === TRUE) {
    $form['ubb-select'] = array(
      '#type' => 'textfield',
      '#title' => t('Select button Javascript'),
      '#description' => t('Leave blank for no select button.'),
      '#size' => 48,
    );
  }
  else {
    $form['ubb-select'] = array(
      '#type' => 'hidden',
      '#value' => $settings['select'],
    );
  }

  // Add the various settings checkboxes

  $form['display-options'] = array(
    '#type' => 'fieldset',
    '#title' => t('Display options'),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
  );

  if ($settings['nids'] === TRUE) {
    $form['display-options']['ubb-nids'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display node IDs'),
    );
  }
  else {
    $form['display-options']['ubb-nids'] = array(
      '#type' => 'hidden',
      '#value' => 'false',
    );
  }

  if ($settings['search'] === TRUE) {
    $form['display-options']['ubb-search'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display the search form'),
    );
  }
  else {
    $form['display-options']['ubb-search'] = array(
      '#type' => 'hidden',
      '#value' => 'false',
    );
  }

  if ($settings['view'] === TRUE) {
    $form['display-options']['ubb-view'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display view button'),
    );
  }
  else {
    $form['display-options']['ubb-view'] = array(
      '#type' => 'hidden',
      '#value' => 'false',
    );
  }

  if ($settings['window'] === TRUE) {
    $form['display-options']['ubb-window'] = array(
      '#type' => 'checkbox',
      '#title' => t('View nodes in new window'),
    );
  }
  else {
    $form['display-options']['ubb-window'] = array(
      '#type' => 'hidden',
      '#value' => 'current',
    );
  }

  if ($settings['close'] === TRUE) {
    $form['display-options']['ubb-close'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display close button'),
    );
  }
  else {
    $form['display-options']['ubb-close'] = array(
      '#type' => 'hidden',
      '#value' => 'false',
    );
  }

  if ($settings['multi'] === TRUE) {
    $form['display-options']['ubb-multi'] = array(
      '#type' => 'checkbox',
      '#title' => t('Allow multiple node selection'),
    );
  }
  else {
    $form['display-options']['ubb-multi'] = array(
      '#type' => 'hidden',
      '#value' => 'false',
    );
  }

  $form['display-options']['ubb-class'] = array(
    '#type' => 'textfield',
    '#title' => t('CSS class name'),
    '#description' => t('Add a CSS class to the browser.'),
    '#default_value' => $settings['class'],
    '#size' => 24,
  );

  $form['display-names'] = array(
    '#type' => 'fieldset',
    '#title' => t('Alter display terms'),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
  );
  $form['display-names']['instructions'] = array(
    '#value' => '<div>'. t('Use the following textfields to provide alternate '
               .'words for display in uBrowser.') .'</div>',
  );

  if ($settings['categ'] === TRUE) {
    $form['display-names']['ubb-categ'] = array(
      '#type' => 'textfield',
      '#title' => t('category'),
      '#size' => 16,
      '#prefix' => '<span style="float: left; margin-right: 1em;">',
      '#suffix' => '</span>',
    );
  }
  else {
    $form['display-names']['ubb-categ'] = array(
      '#type' => 'hidden',
      '#value' => $settings['categ'],
    );
  }

  if ($settings['nodesg'] === TRUE) {
    $form['display-names']['ubb-nodesg'] = array(
      '#type' => 'textfield',
      '#title' => t('node'),
      '#size' => 16,
      '#prefix' => '<span style="float: left; margin-right: 1em;">',
      '#suffix' => '</span>',
    );
  }
  else {
    $form['display-names']['ubb-nodesg'] = array(
      '#type' => 'hidden',
      '#value' => $settings['nodesg'],
    );
  }

  if ($settings['nodepl'] === TRUE) {
    $form['display-names']['ubb-nodepl'] = array(
      '#type' => 'textfield',
      '#title' => t('nodes'),
      '#size' => 16,
      '#prefix' => '<span style="float: left; margin-right: 1em;">',
      '#suffix' => '</span>',
    );
  }
  else {
    $form['display-names']['ubb-nodepl'] = array(
      '#type' => 'hidden',
      '#value' => $settings['nodepl'],
    );
  }

  if (isset($settings['code'])) {
    $code_id = $settings['code'];
  }
  else {
    $code_id = 'null';
  }

  $form['ubb-build'] = array(
    '#type' => 'submit',
    '#value' => isset($settings['display']) ? $settings['display'] : t('Display uBrowser'),
    '#attributes' => array('onclick' => "return build_ubrowser('". base_path() 
                                       ."', '$code_id');"),
  );

  return $form;
}

function theme_ubrowser_builder($form) {
  $output = '<table cellpadding="5"><tr valign="top">'
           .'<td>'. drupal_render($form['ubb-vid']) .'</td>'
           .'<td>'. drupal_render($form['ubb-select']) .'</td>'
           .'</tr><tr valign="top">'
           .'<td>'. drupal_render($form['display-options']) .'</td>'
           .'<td>'. drupal_render($form['filter-options']) .'</td>'
           .'</tr><tr>'
           .'<td colspan="2">'. drupal_render($form['display-names']) .'</td>'
           .'</tr><tr>'
           .'<td colspan="2">'. drupal_render($form) .'</td>'
           .'</tr></table>';

  return $output;
}

/**
 * Rewrite of taxonomy_select_nodes() to return every matching node, not just
 * a subset for paged display. Includes ability to filter by node type.
 */
function _ubrowser_select_nodes($tids = array(), $filter = NULL, $operator = 'or', $depth = 0, $pager = TRUE, $order = 'n.sticky DESC, n.created DESC') {
  if (count($tids) > 0) {
    if ($filter != NULL) {
      if (strpos($filter, ',') > 0) {
        $filter_array = explode(',', $filter);
        $filter_where = '';
        foreach ($filter_array as $type) {
          $filter_where .= ($filter_where == '') ? ' AND (' : ' OR ';
          $filter_where .= "n.type = '". $type ."'";
        }
        $filter_where .= ')';
      }
      else {
        $filter_where = " AND n.type = '". $filter ."'";
      }
    }

    $descendant_tids = array();
    if ($depth === 'all') {
      $depth = NULL;
    }
    foreach ($tids as $index => $tid) {
      $term = taxonomy_get_term($tid);
      $tree = taxonomy_get_tree($term->vid, $tid, -1, $depth);
      $descendant_tids[] = array_merge(array($tid), array_map('_taxonomy_get_tid_from_term', $tree));
    }

    if ($operator == 'or') {
      $str_tids = implode(',', call_user_func_array('array_merge', $descendant_tids));
      $sql = 'SELECT DISTINCT(n.nid), n.sticky, n.title, n.created FROM {node} n INNER JOIN {term_node} tn ON n.nid = tn.nid WHERE tn.tid IN ('. $str_tids .') AND n.status = 1 '. $filter_where .' ORDER BY '. $order;
    }
    else {
      $joins = '';
      $wheres = '';
      foreach ($descendant_tids as $index => $tids) {
        $joins .= ' INNER JOIN {term_node} tn'. $index .' ON n.nid = tn'. $index .'.nid';
        $wheres .= ' AND tn'. $index .'.tid IN ('. implode(',', $tids) .')';
      }
      $sql = 'SELECT DISTINCT(n.nid), n.sticky, n.title, n.created FROM {node} n '. $joins .' WHERE n.status = 1 '. $wheres . $filter_where .' ORDER BY '. $order;
    }
    $sql = db_rewrite_sql($sql);
    $result = db_query($sql);
  }

  return $result;  
}

/**
 * Rewrite of do_search() to return every matching node, not just a subset
 * for paged display.
 */
function _ubrowser_search($keywords, $type, $join1 = '', $where1 = '1', $arguments1 = array(), $select2 = 'i.relevance AS score', $join2 = '', $arguments2 = array(), $sort_parameters = 'ORDER BY score DESC') {
  $query = search_parse_query($keywords);

  if ($query[2] == '') {
    form_set_error('keys', t('You must include at least one positive keyword with @count characters or more.', array('@count' => variable_get('minimum_word_size', 3))));
  }
  if ($query === NULL || $query[0] == '' || $query[2] == '') {
    return array();
  }

  $conditions = $where1 .' AND ('. $query[2] .") AND i.type = '%s'";
  $arguments = array_merge($arguments1, $query[3], array($type, $query[4]));
  $result = db_query_temporary("SELECT i.type, i.sid, SUM(i.score * t.count) AS relevance, COUNT(*) AS matches FROM {search_index} i INNER JOIN {search_total} t ON i.word = t.word $join1 WHERE $conditions GROUP BY i.type, i.sid HAVING COUNT(*) >= %d", $arguments, 'temp_search_sids');

  $normalize = db_result(db_query('SELECT MAX(relevance) FROM temp_search_sids'));
  if (!$normalize) {
    return array();
  }
  $select2 = str_replace('i.relevance', '('. (1.0 / $normalize) .' * i.relevance)', $select2);

  $conditions = '('. $query[0] .')';
  $arguments = array_merge($arguments2, $query[1]);
  $result = db_query_temporary("SELECT i.type, i.sid, $select2 FROM temp_search_sids i INNER JOIN {search_dataset} d ON i.sid = d.sid AND i.type = d.type $join2 WHERE $conditions $sort_parameters", $arguments, 'temp_search_results');
  if (($count = db_result(db_query('SELECT COUNT(*) FROM temp_search_results'))) == 0) {
    return array();
  }
  $count_query = "SELECT $count";

  $result = db_query("SELECT * FROM temp_search_results");
  $results = array();
  while ($item = db_fetch_object($result)) {
    $results[] = $item;
  }
  return $results;
}
'. $term_select_form .'	'. $node_select_form .'
'. $search_form .'	'. $actions_form .'
'. drupal_render($form['ubb-vid']) .'	'. drupal_render($form['ubb-select']) .'
'. drupal_render($form['display-options']) .'	'. drupal_render($form['filter-options']) .'
'. drupal_render($form['display-names']) .'
'. drupal_render($form) .'