'use strict';

    var global = tinymce.util.Tools.resolve('tinymce.PluginManager');

    var global$1 = tinymce.util.Tools.resolve('tinymce.util.Tools');

    var setDir = function (editor, dir) {

      var dom = editor.dom;

      var curDir;

      var blocks = editor.selection.getSelectedBlocks();

      if (blocks.length) {

        curDir = dom.getAttrib(blocks[0], 'dir');

        global$1.each(blocks, function (block) {

          if (!dom.getParent(block.parentNode, '*[dir="' + dir + '"]', dom.getRoot())) {

            dom.setAttrib(block, 'dir', curDir !== dir ? dir : null);

          }

        });

        editor.nodeChanged();

      }

    };

    var Direction = { setDir: setDir };

    var register = function (editor) {

      editor.addCommand('mceDirectionLTR', function () {

        Direction.setDir(editor, 'ltr');

      });

      editor.addCommand('mceDirectionRTL', function () {

        Direction.setDir(editor, 'rtl');

      });

    };

    var Commands = { register: register };

    var generateSelector = function (dir) {

      var selector = [];

      global$1.each('h1 h2 h3 h4 h5 h6 div p'.split(' '), function (name) {

        selector.push(name + '[dir=' + dir + ']');

      return selector.join(',');

    };

    var register$1 = function (editor) {

      editor.addButton('ltr', {

        title: 'Left to right',

        cmd: 'mceDirectionLTR',

        stateSelector: generateSelector('ltr')

      });

      editor.addButton('rtl', {

        title: 'Right to left',

        cmd: 'mceDirectionRTL',

        stateSelector: generateSelector('rtl')

      });

    };

    var Buttons = { register: register$1 };

    global.add('directionality', function (editor) {

      Commands.register(editor);

      Buttons.register(editor);

    function Plugin () {

    }

    return Plugin;