Drupal wysiwyg CodeMirror

<?php
/**
    * @file
    * Editor integration functions for CodeMirror.
    */

/**
    * Plugin implementation of hook_editor().
    */
function wysiwyg_codemirror_editor() {
    $editor['codemirror'] = array(
    'title' => 'CodeMirror',
    'vendor url' => 'http://codemirror.net',
    'download url' => 'http://codemirror.net/codemirror.zip',
    'library path' => wysiwyg_get_path('codemirror'),
    'libraries' => array(
        '' => array(
        'title' => 'CodeMirror',
        'files' => array('lib/codemirror.js'),
        ),
    ),
    'version callback' => 'wysiwyg_codemirror_version',
    'themes callback' => 'wysiwyg_codemirror_themes',
    'settings callback' => 'wysiwyg_codemirror_settings',
    'load callback' => 'wysiwyg_codemirror_load',
    'plugin callback' => 'wysiwyg_codemirror_plugins',
    'versions' => array(
        '2' => array(
        'js files' => array('codemirror.js'),
        'css files' => array('codemirror.css'),
        ),
    ),
    );
    return $editor;
}

/**
    * Detect editor version.
    *
    * @param $editor
    *   An array containing editor properties as returned from hook_editor().
    *
    * @return
    *   The installed editor version.
    */
function wysiwyg_codemirror_version($editor) {
    $fp = $editor['library path'] . '/README.md';
    if (!file_exists($fp)) {
        return;
    }
    $fp = fopen($fp, 'r');
    $line = fgets($fp);
    if (preg_match('@([0-9\.]+)$@', $line, $version)) {
        fclose($fp);
        return $version[1];
    }
    fclose($fp);
}

/**
    * Determine available editor themes or check/reset a given one.
    *
    * @param $editor
    *   A processed hook_editor() array of editor properties.
    * @param $profile
    *   A wysiwyg editor profile.
    *
    * @return
    *   An array of theme names. The first returned name should be the default
    *   theme name.
    */
function wysiwyg_codemirror_themes($editor, $profile) {
    $themes = array('default');
    //TODO: no need in this, i do not found way to use themes with wysiwyg module
    /*if ($handle = opendir($editor['library path'] . '/theme')) {
        while (false !== ($file = readdir($handle))) {
            if ($file != "." && $file != ".." && $file != "default.css") {
                if(pathinfo($file, PATHINFO_EXTENSION) == "css") {
                    $themes[] = pathinfo($file, PATHINFO_FILENAME);
                }
            }
        }
        closedir($handle);
    }*/
    return $themes;
}

/**
    * Perform additional actions upon loading this editor.
    *
    * @param $editor
    *   A processed hook_editor() array of editor properties.
    * @param $library
    *   The internal library name (array key) to use.
    */
function wysiwyg_codemirror_load($editor, $library) {
    drupal_add_css($editor['library path'] . '/lib/codemirror.css');
    drupal_add_css($editor['library path'] . '/theme/default.css'); //TODO: load apropriate theme file here, when wysiwyg will support this feature

    drupal_add_js($editor['library path'] . '/lib/codemirror.js');
    drupal_add_js($editor['library path'] . '/mode/xml/xml.js');
    drupal_add_js($editor['library path'] . '/mode/javascript/javascript.js');
    drupal_add_js($editor['library path'] . '/mode/css/css.js');
    drupal_add_js($editor['library path'] . '/mode/clike/clike.js');
    drupal_add_js($editor['library path'] . '/mode/php/php.js');
}

/**
    * Return runtime editor settings for a given wysiwyg profile.
    *
    * @param $editor
    *   A processed hook_editor() array of editor properties.
    * @param $config
    *   An array containing wysiwyg editor profile settings.
    * @param $theme
    *   The name of a theme/GUI/skin to use.
    *
    * @return
    *   A settings array to be populated in
    *   Drupal.settings.wysiwyg.configs.{editor}
    */
function wysiwyg_codemirror_settings($editor, $config, $theme) {
    $settings = array(
        'theme' => $theme,
    );

    if (isset($config['buttons']['default']['lineNumbers'])) {
        $settings['lineNumbers'] = (bool)$config['buttons']['default']['lineNumbers'];
    }
    if (isset($config['buttons']['default']['indentWithTabs'])) {
        $settings['indentWithTabs'] = (bool)$config['buttons']['default']['indentWithTabs'];
    }

    return $settings;
}

/**
    * Return internal plugins for this editor; semi-implementation of hook_wysiwyg_plugin().
    */
function wysiwyg_codemirror_plugins($editor) {
    $plugins = array(
    'default' => array(
        'buttons' => array(
        'lineNumbers' => t('Line numbers'),
        'indentWithTabs' => t('Indent with tabs'),
        ),
        'internal' => TRUE,
    ),
    );
    return $plugins;
}

;(function ($) {
  Drupal.wysiwyg.codemirror = {} // CodeMirror instances storage

  /**
   * Attach this editor to a target element.
   *
   * See Drupal.wysiwyg.editor.attach.none() for a full desciption of this hook.
   */
  Drupal.wysiwyg.editor.attach.codemirror = function (context, params, settings) {
    if (typeof params != 'undefined') {
      Drupal.wysiwyg.codemirror[params.field] = CodeMirror.fromTextArea(document.getElementById(params.field), {
        lineNumbers: Drupal.settings.wysiwyg.configs.codemirror.format5.lineNumbers, //true,
        matchBrackets: true,
        mode: 'application/x-httpd-php',
        indentUnit: 4,
        indentWithTabs: Drupal.settings.wysiwyg.configs.codemirror.format5.indentWithTabs, //true,
        enterMode: 'keep',
        tabMode: 'shift'
      })
    }
  }

  /**
   * Detach a single or all editors.
   *
   * See Drupal.wysiwyg.editor.detach.none() for a full desciption of this hook.
   */
  Drupal.wysiwyg.editor.detach.codemirror = function (context, params) {
    if (typeof params != 'undefined') {
      Drupal.wysiwyg.codemirror[params.field].toTextArea()
      delete Drupal.wysiwyg.codemirror[params.field]
    }
  }
})(jQuery)

.CodeMirror {
  border: 1px solid #999;
}