(function () {

var tabfocus = (function () {

  'use strict';

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

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

  var global$2 = tinymce.util.Tools.resolve('tinymce.EditorManager');

  var global$3 = tinymce.util.Tools.resolve('tinymce.Env');

  var global$4 = tinymce.util.Tools.resolve('tinymce.util.Delay');

  var global$5 = tinymce.util.Tools.resolve('tinymce.util.Tools');

  var global$6 = tinymce.util.Tools.resolve('tinymce.util.VK');

  var getTabFocusElements = function (editor) {

    return editor.getParam('tabfocus_elements', ':prev,:next');

  };

  var getTabFocus = function (editor) {

    return editor.getParam('tab_focus', getTabFocusElements(editor));

  };

  var $_8rita4kwjjgwed4m = { getTabFocus: getTabFocus };

  var DOM = global$1.DOM;

  var tabCancel = function (e) {

    if (e.keyCode === global$6.TAB && !e.ctrlKey && !e.altKey && !e.metaKey) {

      e.preventDefault();

    }

  };

  var setup = function (editor) {

    function tabHandler(e) {

      var x, el, v, i;

      if (e.keyCode !== global$6.TAB || e.ctrlKey || e.altKey || e.metaKey || e.isDefaultPrevented()) {

        return;

      }

      function find(direction) {

        el = DOM.select(':input:enabled,*[tabindex]:not(iframe)');

        function canSelectRecursive(e) {

          return e.nodeName === 'BODY' || e.type !== 'hidden' && e.style.display !== 'none' && e.style.visibility !== 'hidden' && canSelectRecursive(e.parentNode);

        }

        function canSelect(el) {

          return /INPUT|TEXTAREA|BUTTON/.test(el.tagName) && global$2.get(e.id) && el.tabIndex !== -1 && canSelectRecursive(el);

        }

        global$5.each(el, function (e, i) {

          if (e.id === editor.id) {

            x = i;

            return false;

          }

        });

        if (direction > 0) {

          for (i = x + 1; i < el.length; i++) {

            if (canSelect(el[i])) {

              return el[i];

            }

          }

        } else {

          for (i = x - 1; i >= 0; i--) {

            if (canSelect(el[i])) {

              return el[i];

            }

          }

        }

        return null;

      }

      v = global$5.explode($_8rita4kwjjgwed4m.getTabFocus(editor));

      if (v.length === 1) {

        v[1] = v[0];

        v[0] = ':prev';

      }

      if (e.shiftKey) {

        if (v[0] === ':prev') {

          el = find(-1);

        } else {

          el = DOM.get(v[0]);

        }

      } else {

        if (v[1] === ':next') {

          el = find(1);

        } else {

          el = DOM.get(v[1]);

        }

      }

      if (el) {

        var focusEditor = global$2.get(el.id || el.name);

        if (el.id && focusEditor) {

          focusEditor.focus();

        } else {

          global$4.setTimeout(function () {

            if (!global$3.webkit) {

              window.focus();

            }

            el.focus();

          }, 10);

        }

        e.preventDefault();

      }

    }

    editor.on('init', function () {

      if (editor.inline) {

        DOM.setAttrib(editor.getBody(), 'tabIndex', null);

      }

      editor.on('keyup', tabCancel);

      if (global$3.gecko) {

        editor.on('keypress keydown', tabHandler);

      } else {

        editor.on('keydown', tabHandler);

      }

    });

  };

  var $_6zogdykpjjgwed4h = { setup: setup };

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

    $_6zogdykpjjgwed4h.setup(editor);

  });

  function Plugin () {

  }

  return Plugin;

}());

})();