CKEDITOR.editorConfig = function( config )
{
  // Define changes to default configuration here. For example:
  config.language = 'ru';
  // config.uiColor = '#AADC6E';
  
  config.extraPlugins = 'stylesheetparser,youtube,texttransform,autogrow,floating-tools';

  config.toolbar = [
    { name: 'document',    items: [ 'Source' ] },
    { name: 'clipboard',   items: [ 'Cut', 'Copy', 'Paste', 'PasteText', 'PasteFromWord', '-', 'Undo', 'Redo' ] },
    { name: 'editing',     items: [ 'Find', 'Replace', '-', 'SelectAll', '-', 'TransformTextSwitcher', 'TransformTextToLowercase', 'TransformTextToUppercase', 'TransformTextCapitalize' ] },
    '/',
    { name: 'basicstyles', items: [ 'Bold','Italic','Underline','Strike','Subscript','Superscript','-','RemoveFormat' ] },
    { name: 'paragraph',   items: [ 'NumberedList','BulletedList','-','Blockquote','CreateDiv','-','JustifyLeft','JustifyCenter','JustifyRight','JustifyBlock' ] },
    { name: 'links',       items: [ 'Link','Unlink','Anchor' ] },
    '/',
    { name: 'insert',      items: [ 'Image', 'Youtube', 'Flash', 'Table', 'SpecialChar' ] },
    { name: 'styles',      items: [ 'Styles', 'Format' ] },
    { name: 'others',      items: [ 'Maximize', 'ShowBlocks' ] }
  ];

  // config.floatingtools = 'Basic';
  // config.floatingtools_Basic = [
  //   ['Bold', 'Italic', '-', 'NumberedList', 'BulletedList', '-', 'Link']
  // ];

  config.stylesSet = [];
  config.contentsCss = '/assets/ckeditor/styles.css';

  config.autoGrow_onStartup = true;

  config.youtube_width = '698';
  config.youtube_height = '524';
  config.youtube_related = false;
  config.allowedContent = true;

  /* Filebrowser routes */
  // The location of an external file browser, that should be launched when "Browse Server" button is pressed.
  config.filebrowserBrowseUrl = "/ckeditor/attachment_files";

  // The location of an external file browser, that should be launched when "Browse Server" button is pressed in the Flash dialog.
  config.filebrowserFlashBrowseUrl = "/ckeditor/attachment_files";

  // The location of a script that handles file uploads in the Flash dialog.
  config.filebrowserFlashUploadUrl = "/ckeditor/attachment_files";
  
  // The location of an external file browser, that should be launched when "Browse Server" button is pressed in the Link tab of Image dialog.
  config.filebrowserImageBrowseLinkUrl = "/ckeditor/pictures";

  // The location of an external file browser, that should be launched when "Browse Server" button is pressed in the Image dialog.
  config.filebrowserImageBrowseUrl = "/ckeditor/pictures";

  // The location of a script that handles file uploads in the Image dialog.
  config.filebrowserImageUploadUrl = "/ckeditor/pictures";
  
  // The location of a script that handles file uploads.
  config.filebrowserUploadUrl = "/ckeditor/attachment_files";
  
  // Rails CSRF token
  config.filebrowserParams = function(){
    var csrf_token, csrf_param, meta,
        metas = document.getElementsByTagName('meta'),
        params = new Object();
    
    for ( var i = 0 ; i < metas.length ; i++ ){
      meta = metas[i];

      switch(meta.name) {
        case "csrf-token":
          csrf_token = meta.content;
          break;
        case "csrf-param":
          csrf_param = meta.content;
          break;
        default:
          continue;
      }
    }

    if (csrf_param !== undefined && csrf_token !== undefined) {
      params[csrf_param] = csrf_token;
    }
    
    return params;
  };
  
  config.addQueryString = function( url, params ){
    var queryString = [];

    if ( !params ) {
      return url;
    } else {
      for ( var i in params )
        queryString.push( i + "=" + encodeURIComponent( params[ i ] ) );
    }

    return url + ( ( url.indexOf( "?" ) != -1 ) ? "&" : "?" ) + queryString.join( "&" );
  };
  
  // Integrate Rails CSRF token into file upload dialogs (link, image, attachment and flash)
  CKEDITOR.on( 'dialogDefinition', function( ev ){
    // Take the dialog name and its definition from the event data.
    var dialogName = ev.data.name;
    var dialogDefinition = ev.data.definition;
    var content, upload;
    
    if (CKEDITOR.tools.indexOf(['link', 'image', 'attachment', 'flash'], dialogName) > -1) {
      content = (dialogDefinition.getContents('Upload') || dialogDefinition.getContents('upload'));
      upload = (content == null ? null : content.get('upload'));
      
      if (upload && upload.filebrowser && upload.filebrowser['params'] === undefined) {
        upload.filebrowser['params'] = config.filebrowserParams();
        upload.action = config.addQueryString(upload.action, upload.filebrowser['params']);
      }
    }
  });
};