/**
 * Copyright (c) Tiny Technologies, Inc. All rights reserved.
 * Licensed under the LGPL or a commercial license.
 * For LGPL see License.txt in the project root for license information.
 * For commercial licenses see https://www.tiny.cloud/
 *
 * Version: 5.10.1 (TBD)
 */
(function () {
    'use strict';

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

    var typeOf = function (x) {
      var t = typeof x;
      if (x === null) {
        return 'null';
      } else if (t === 'object' && (Array.prototype.isPrototypeOf(x) || x.constructor && x.constructor.name === 'Array')) {
        return 'array';
      } else if (t === 'object' && (String.prototype.isPrototypeOf(x) || x.constructor && x.constructor.name === 'String')) {
        return 'string';
      } else {
        return t;
      }
    };
    var isType$1 = function (type) {
      return function (value) {
        return typeOf(value) === type;
      };
    };
    var isSimpleType = function (type) {
      return function (value) {
        return typeof value === type;
      };
    };
    var isString = isType$1('string');
    var isBoolean = isSimpleType('boolean');
    var isNullable = function (a) {
      return a === null || a === undefined;
    };
    var isNonNullable = function (a) {
      return !isNullable(a);
    };
    var isFunction = isSimpleType('function');
    var isNumber = isSimpleType('number');

    var noop = function () {
    };
    var compose1 = function (fbc, fab) {
      return function (a) {
        return fbc(fab(a));
      };
    };
    var constant = function (value) {
      return function () {
        return value;
      };
    };
    var identity = function (x) {
      return x;
    };
    var never = constant(false);
    var always = constant(true);

    var none = function () {
      return NONE;
    };
    var NONE = function () {
      var call = function (thunk) {
        return thunk();
      };
      var id = identity;
      var me = {
        fold: function (n, _s) {
          return n();
        },
        isSome: never,
        isNone: always,
        getOr: id,
        getOrThunk: call,
        getOrDie: function (msg) {
          throw new Error(msg || 'error: getOrDie called on none.');
        },
        getOrNull: constant(null),
        getOrUndefined: constant(undefined),
        or: id,
        orThunk: call,
        map: none,
        each: noop,
        bind: none,
        exists: never,
        forall: always,
        filter: function () {
          return none();
        },
        toArray: function () {
          return [];
        },
        toString: constant('none()')
      };
      return me;
    }();
    var some = function (a) {
      var constant_a = constant(a);
      var self = function () {
        return me;
      };
      var bind = function (f) {
        return f(a);
      };
      var me = {
        fold: function (n, s) {
          return s(a);
        },
        isSome: always,
        isNone: never,
        getOr: constant_a,
        getOrThunk: constant_a,
        getOrDie: constant_a,
        getOrNull: constant_a,
        getOrUndefined: constant_a,
        or: self,
        orThunk: self,
        map: function (f) {
          return some(f(a));
        },
        each: function (f) {
          f(a);
        },
        bind: bind,
        exists: bind,
        forall: bind,
        filter: function (f) {
          return f(a) ? me : NONE;
        },
        toArray: function () {
          return [a];
        },
        toString: function () {
          return 'some(' + a + ')';
        }
      };
      return me;
    };
    var from = function (value) {
      return value === null || value === undefined ? NONE : some(value);
    };
    var Optional = {
      some: some,
      none: none,
      from: from
    };

    var map = function (xs, f) {
      var len = xs.length;
      var r = new Array(len);
      for (var i = 0; i < len; i++) {
        var x = xs[i];
        r[i] = f(x, i);
      }
      return r;
    };
    var each = function (xs, f) {
      for (var i = 0, len = xs.length; i < len; i++) {
        var x = xs[i];
        f(x, i);
      }
    };
    var filter = function (xs, pred) {
      var r = [];
      for (var i = 0, len = xs.length; i < len; i++) {
        var x = xs[i];
        if (pred(x, i)) {
          r.push(x);
        }
      }
      return r;
    };

    var DOCUMENT = 9;
    var DOCUMENT_FRAGMENT = 11;
    var ELEMENT = 1;
    var TEXT = 3;

    var fromHtml = function (html, scope) {
      var doc = scope || document;
      var div = doc.createElement('div');
      div.innerHTML = html;
      if (!div.hasChildNodes() || div.childNodes.length > 1) {
        console.error('HTML does not have a single root node', html);
        throw new Error('HTML must have a single root node');
      }
      return fromDom(div.childNodes[0]);
    };
    var fromTag = function (tag, scope) {
      var doc = scope || document;
      var node = doc.createElement(tag);
      return fromDom(node);
    };
    var fromText = function (text, scope) {
      var doc = scope || document;
      var node = doc.createTextNode(text);
      return fromDom(node);
    };
    var fromDom = function (node) {
      if (node === null || node === undefined) {
        throw new Error('Node cannot be null or undefined');
      }
      return { dom: node };
    };
    var fromPoint = function (docElm, x, y) {
      return Optional.from(docElm.dom.elementFromPoint(x, y)).map(fromDom);
    };
    var SugarElement = {
      fromHtml: fromHtml,
      fromTag: fromTag,
      fromText: fromText,
      fromDom: fromDom,
      fromPoint: fromPoint
    };

    var is = function (element, selector) {
      var dom = element.dom;
      if (dom.nodeType !== ELEMENT) {
        return false;
      } else {
        var elem = dom;
        if (elem.matches !== undefined) {
          return elem.matches(selector);
        } else if (elem.msMatchesSelector !== undefined) {
          return elem.msMatchesSelector(selector);
        } else if (elem.webkitMatchesSelector !== undefined) {
          return elem.webkitMatchesSelector(selector);
        } else if (elem.mozMatchesSelector !== undefined) {
          return elem.mozMatchesSelector(selector);
        } else {
          throw new Error('Browser lacks native selectors');
        }
      }
    };

    typeof window !== 'undefined' ? window : Function('return this;')();

    var name = function (element) {
      var r = element.dom.nodeName;
      return r.toLowerCase();
    };
    var type = function (element) {
      return element.dom.nodeType;
    };
    var isType = function (t) {
      return function (element) {
        return type(element) === t;
      };
    };
    var isElement = isType(ELEMENT);
    var isText = isType(TEXT);
    var isDocument = isType(DOCUMENT);
    var isDocumentFragment = isType(DOCUMENT_FRAGMENT);
    var isTag = function (tag) {
      return function (e) {
        return isElement(e) && name(e) === tag;
      };
    };

    var owner = function (element) {
      return SugarElement.fromDom(element.dom.ownerDocument);
    };
    var documentOrOwner = function (dos) {
      return isDocument(dos) ? dos : owner(dos);
    };
    var parent = function (element) {
      return Optional.from(element.dom.parentNode).map(SugarElement.fromDom);
    };
    var children$2 = function (element) {
      return map(element.dom.childNodes, SugarElement.fromDom);
    };

    var rawSet = function (dom, key, value) {
      if (isString(value) || isBoolean(value) || isNumber(value)) {
        dom.setAttribute(key, value + '');
      } else {
        console.error('Invalid call to Attribute.set. Key ', key, ':: Value ', value, ':: Element ', dom);
        throw new Error('Attribute value was not simple');
      }
    };
    var set = function (element, key, value) {
      rawSet(element.dom, key, value);
    };
    var remove = function (element, key) {
      element.dom.removeAttribute(key);
    };

    var isShadowRoot = function (dos) {
      return isDocumentFragment(dos) && isNonNullable(dos.dom.host);
    };
    var supported = isFunction(Element.prototype.attachShadow) && isFunction(Node.prototype.getRootNode);
    var getRootNode = supported ? function (e) {
      return SugarElement.fromDom(e.dom.getRootNode());
    } : documentOrOwner;
    var getShadowRoot = function (e) {
      var r = getRootNode(e);
      return isShadowRoot(r) ? Optional.some(r) : Optional.none();
    };
    var getShadowHost = function (e) {
      return SugarElement.fromDom(e.dom.host);
    };

    var inBody = function (element) {
      var dom = isText(element) ? element.dom.parentNode : element.dom;
      if (dom === undefined || dom === null || dom.ownerDocument === null) {
        return false;
      }
      var doc = dom.ownerDocument;
      return getShadowRoot(SugarElement.fromDom(dom)).fold(function () {
        return doc.body.contains(dom);
      }, compose1(inBody, getShadowHost));
    };

    var ancestor$1 = function (scope, predicate, isRoot) {
      var element = scope.dom;
      var stop = isFunction(isRoot) ? isRoot : never;
      while (element.parentNode) {
        element = element.parentNode;
        var el = SugarElement.fromDom(element);
        if (predicate(el)) {
          return Optional.some(el);
        } else if (stop(el)) {
          break;
        }
      }
      return Optional.none();
    };

    var ancestor = function (scope, selector, isRoot) {
      return ancestor$1(scope, function (e) {
        return is(e, selector);
      }, isRoot);
    };

    var isSupported = function (dom) {
      return dom.style !== undefined && isFunction(dom.style.getPropertyValue);
    };

    var get = function (element, property) {
      var dom = element.dom;
      var styles = window.getComputedStyle(dom);
      var r = styles.getPropertyValue(property);
      return r === '' && !inBody(element) ? getUnsafeProperty(dom, property) : r;
    };
    var getUnsafeProperty = function (dom, property) {
      return isSupported(dom) ? dom.style.getPropertyValue(property) : '';
    };

    var getDirection = function (element) {
      return get(element, 'direction') === 'rtl' ? 'rtl' : 'ltr';
    };

    var children$1 = function (scope, predicate) {
      return filter(children$2(scope), predicate);
    };

    var children = function (scope, selector) {
      return children$1(scope, function (e) {
        return is(e, selector);
      });
    };

    var getParentElement = function (element) {
      return parent(element).filter(isElement);
    };
    var getNormalizedBlock = function (element, isListItem) {
      var normalizedElement = isListItem ? ancestor(element, 'ol,ul') : Optional.some(element);
      return normalizedElement.getOr(element);
    };
    var isListItem = isTag('li');
    var setDir = function (editor, dir) {
      var selectedBlocks = editor.selection.getSelectedBlocks();
      if (selectedBlocks.length > 0) {
        each(selectedBlocks, function (block) {
          var blockElement = SugarElement.fromDom(block);
          var isBlockElementListItem = isListItem(blockElement);
          var normalizedBlock = getNormalizedBlock(blockElement, isBlockElementListItem);
          var normalizedBlockParent = getParentElement(normalizedBlock);
          normalizedBlockParent.each(function (parent) {
            var parentDirection = getDirection(parent);
            if (parentDirection !== dir) {
              set(normalizedBlock, 'dir', dir);
            } else if (getDirection(normalizedBlock) !== dir) {
              remove(normalizedBlock, 'dir');
            }
            if (isBlockElementListItem) {
              var listItems = children(normalizedBlock, 'li[dir]');
              each(listItems, function (listItem) {
                return remove(listItem, 'dir');
              });
            }
          });
        });
        editor.nodeChanged();
      }
    };

    var register$1 = function (editor) {
      editor.addCommand('mceDirectionLTR', function () {
        setDir(editor, 'ltr');
      });
      editor.addCommand('mceDirectionRTL', function () {
        setDir(editor, 'rtl');
      });
    };

    var getNodeChangeHandler = function (editor, dir) {
      return function (api) {
        var nodeChangeHandler = function (e) {
          var element = SugarElement.fromDom(e.element);
          api.setActive(getDirection(element) === dir);
        };
        editor.on('NodeChange', nodeChangeHandler);
        return function () {
          return editor.off('NodeChange', nodeChangeHandler);
        };
      };
    };
    var register = function (editor) {
      editor.ui.registry.addToggleButton('ltr', {
        tooltip: 'Left to right',
        icon: 'ltr',
        onAction: function () {
          return editor.execCommand('mceDirectionLTR');
        },
        onSetup: getNodeChangeHandler(editor, 'ltr')
      });
      editor.ui.registry.addToggleButton('rtl', {
        tooltip: 'Right to left',
        icon: 'rtl',
        onAction: function () {
          return editor.execCommand('mceDirectionRTL');
        },
        onSetup: getNodeChangeHandler(editor, 'rtl')
      });
    };

    function Plugin () {
      global.add('directionality', function (editor) {
        register$1(editor);
        register(editor);
      });
    }

    Plugin();

}());
