(function () {

var tabfocus = (function (domGlobals) {

    '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 Settings = { 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(Settings.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) {

                domGlobals.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 Keyboard = { setup: setup };

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

      Keyboard.setup(editor);

    });

    function Plugin () {

    }

    return Plugin;

}(window));

})();