<?php
// $Id: yui_editor.module,v 1.5.2.17.2.9 2008-11-21 23:05:28 jeffcd Exp $

/**
 * @file
 * Replace textareas with the YUI rich text editor.
 */

/**
 * Implementation of hook_menu().
 */
function yui_editor_menu() {
  $items['admin/settings/yui_editor'] = array(
    'title' => t('YUI editor settings'),
    'page callback' => 'yui_editor_profile_list',
    'access callback' => 'user_access',
    'access arguments' => array('administer site configuration'),
    'description' => t('View/modify YUI editor settings'),
    'file' => 'yui_editor.admin.inc',
  );
  $items['admin/settings/yui_editor/list'] = array(
    'title' => 'List',
    'file' => 'yui_editor.admin.inc',
    'type' => MENU_DEFAULT_LOCAL_TASK,
  );
  $items['admin/settings/yui_editor/add'] = array(
    'title' => 'Add profile',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('yui_editor_profile'),
    'access arguments' => array('administer site configuration'),
    'file' => 'yui_editor.admin.inc',
    'type' => MENU_LOCAL_TASK,
    'weight' => 1,
  );
  $items['admin/settings/yui_editor/edit/%'] = array(
    'title' => 'Edit profile',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('yui_editor_profile'),
    'access arguments' => array('administer site configuration'),
    'file' => 'yui_editor.admin.inc',
    'type' => MENU_CALLBACK,
  );
  $items['admin/settings/yui_editor/delete/%/%'] = array(
    'title' => 'Delete profile',
    'page callback' => 'yui_editor_profile_delete',
    'page arguments' => array(4, 5),
    'access arguments' => array('administer site configuration'),
    'file' => 'yui_editor.admin.inc',
    'type' => MENU_CALLBACK,
  );

  _yui_editor_plugin('menu', $items, $items);

  return $items;
}

/**
 * implementation of hook_perm().
 */
function yui_editor_perm() {
  return array('access yui editor');
}

/**
 * Implementation of hook_init().
 */
function yui_editor_init() {
  if (!user_access('access yui editor')) {
    return;
  }

  global $user;
  $path = drupal_get_path_alias($_GET['q']);
  $profiles = variable_get('yui_editor_profiles', array());
  $role_pass = FALSE;

  foreach ($profiles as $priority => $list) {
    foreach ($list as $pid => $profile) {
      $regexp = '/^('. preg_replace(array('/(\r\n?|\n)/', '/\\\\\*/', '/(^|\|)\\\\<front\\\\>($|\|)/'), array('|', '.*', '\1'. preg_quote(variable_get('site_frontpage', 'node'), '/') .'\2'), preg_quote($profile['include'], '/')) .')$/';

      foreach ($user->roles as $rid => $name) {
        if ($profile['roles'][$rid] == $rid) {
          $role_pass = TRUE;
          break;
        }
      }
      if ((empty($profile['include']) or preg_match($regexp, $path)) and $role_pass) {
        if (!empty($profile['type'])) {

          // This profile specifies a list of content-types to match

          $matches = array();
          if (preg_match('/^(node\/add\/(.*)|node\/(\d*)\/edit)$/',$path,$matches)) {

            // Only check against node/add/* and node/*/edit pages

            if (!empty($matches[2])) {
              // For node/add/* pages, the content-type is in the path
              $type = $matches[2];
            }
            elseif (!empty($matches[3])) {
              // For node/*/edit pages, the nid is in the path
              $type = db_result(db_query('select type from {node} where nid=%d',$matches[3]));
            }
            else {
              // Shouldn't get here...
              watchdog('error','Something is wrong with the content-type patch to yui_editor_init()');
              continue;
            }
            if (!in_array($type,preg_split('/[\r\n]+/',$profile['type']))) {
              //                       If the type of the current page isn't in the list, try the next profile.
              continue;
            }
          }
        }
        $regexp = '/^('. preg_replace(array('/(\r\n?|\n)/', '/\\\\\*/', '/(^|\|)\\\\<front\\\\>($|\|)/'), array('|', '.*', '\1'. preg_quote(variable_get('site_frontpage', 'node'), '/') .'\2'), preg_quote($profile['type'], '/')) .')$/';
        unset($profile['include']);
        unset($profile['type']);
        yui_render_editor($profile);
        break 2;
      }
    }
  }
}

/**
 * Add the javascript/CSS needed to render the editor
 */
function yui_render_editor($profile) {
  _yui_editor_plugin('render', $profile, $profile);

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

  if ($profile['button_profile'] != 1) {
    drupal_add_js(drupal_get_path('module', 'yui_editor') .'/toolbars/'. $profile['button_profile']);
  }
  else {
    $toolbar = "function yui_editor_toolbar() { this.toolbar = { titlebar: '', collapse: true, draggable: false, buttonType: 'advanced', buttons: [". $profile['custom'] ."] }; }";
    drupal_add_js($toolbar, 'inline', 'footer');
  }

  $ids = $profile['ids'];
  $ids = str_replace(array("\r\n", "\n\r", "\r"), "\n", $ids);

  $textareas = array();
  if (!empty($ids)) {
    $textareas = explode("\n", $ids);
  }
  else {
    $textareas[] = 'edit-body';
  }

  $settings = '';
  unset($profile['custom']);
  unset($profile['_custom_html']);
  $profile['base_path'] = base_path();
  $settings = drupal_to_js($profile);
  $editors = '';
  foreach ($textareas as $id) {
    $editors .= "YAHOO.Drupal.editors.push(new YAHOO.Drupal.yui_editor('$id', $settings));\n";
  }

  drupal_add_js("YAHOO.util.Event.onDOMReady(function () { $editors YAHOO.Drupal.yui_editor_load.fire();\n });", 'inline', 'footer');
}

function yui_editor_load_libs() {
  // TODO: only load CSS/JS based on the settings...
  $yui_source = variable_get('yui_source', 'http://yui.yahooapis.com/2.6.0');
  yui_add_css('editor', $yui_source, '/build/menu/assets/skins/sam/menu.css');
  yui_add_css('editor', $yui_source, '/build/button/assets/skins/sam/button.css');
  yui_add_css('editor', $yui_source, '/build/fonts/fonts-min.css');
  yui_add_css('editor', $yui_source, '/build/container/assets/skins/sam/container.css');
  yui_add_css('editor', $yui_source, '/build/autocomplete/assets/skins/sam/autocomplete.css');
  yui_add_css('editor', $yui_source, '/build/editor/assets/skins/sam/editor.css');
  yui_add_css('editor', $yui_source, '/build/resize/assets/skins/sam/resize.css');
  yui_add_js('editor', $yui_source, '/build/yahoo-dom-event/yahoo-dom-event.js');
  yui_add_js('editor', $yui_source, '/build/utilities/utilities.js');
  yui_add_js('editor', $yui_source, '/build/dragdrop/dragdrop-min.js');
  yui_add_js('editor', $yui_source, '/build/animation/animation-min.js');
  if (preg_match('/2.6.[0-9]$/iU', $yui_source)) {
    yui_add_js('editor', $yui_source, '/build/element/element-min.js');
  }
  else {
    yui_add_js('editor', $yui_source, '/build/element/element-beta-min.js');
  }
  yui_add_js('editor', $yui_source, '/build/container/container-min.js');
  yui_add_js('editor', $yui_source, '/build/menu/menu-min.js');
  yui_add_js('editor', $yui_source, '/build/button/button-min.js');
  if (preg_match('/2.6.[0-9]$/iU', $yui_source)) {
    yui_add_js('editor', $yui_source, '/build/resize/resize-min.js');
    yui_add_js('editor', $yui_source, '/build/datasource/datasource-min.js');
    yui_add_js('editor', $yui_source, '/build/autocomplete/autocomplete-min.js');
    yui_add_js('editor', $yui_source, '/build/editor/editor-min.js');
  }
  else {
    yui_add_js('editor', $yui_source, '/build/resize/resize-beta-min.js');
    yui_add_js('editor', $yui_source, '/build/autocomplete/autocomplete-min.js');
    yui_add_js('editor', $yui_source, '/build/editor/editor-beta-min.js');
  }
}

function _yui_editor_plugin($op, &$d1, &$d2) {
  static $plugins;

  if ($plugins == NULL) {
    $d = dir(drupal_get_path('module', 'yui_editor') .'/plugins');
    while (false !== ($entry = $d->read())) {
      if ($entry != '.' && $entry != '..' && preg_match('/\.inc$/', $entry)) {
        require_once(drupal_get_path('module', 'yui_editor') .'/plugins/'. $entry);
        $plugins[] = preg_replace('/\.inc$/', '', $entry);
      }
    }
    $d->close();
  }

  foreach ($plugins as $plugin) {
    if (function_exists("yui_editor_${plugin}_$op")) {
      call_user_func_array("yui_editor_${plugin}_$op", array(&$d1, &$d2));
    }
  }
}