'use strict';

function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return _typeof(key) === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (_typeof(input) !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (_typeof(res) !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
var crel = require('crelt');
var prosemirrorCommands = require('prosemirror-commands');
var prosemirrorHistory = require('prosemirror-history');
var prosemirrorState = require('prosemirror-state');
var SVG = "http://www.w3.org/2000/svg";
var XLINK = "http://www.w3.org/1999/xlink";
var prefix$2 = "ProseMirror-icon";
function hashPath(path) {
  var hash = 0;
  for (var i = 0; i < path.length; i++) hash = (hash << 5) - hash + path.charCodeAt(i) | 0;
  return hash;
}
function getIcon(root, icon) {
  var doc = (root.nodeType == 9 ? root : root.ownerDocument) || document;
  var node = doc.createElement("button");
  node.className = prefix$2;
  if (icon.path) {
    var path = icon.path,
      width = icon.width,
      height = icon.height;
    var name = "pm-icon-" + hashPath(path).toString(16);
    if (!doc.getElementById(name)) buildSVG(root, name, icon);
    var svg = node.appendChild(doc.createElementNS(SVG, "svg"));
    svg.style.width = width / height + "em";
    var use = svg.appendChild(doc.createElementNS(SVG, "use"));
    use.setAttributeNS(XLINK, "href", /([^#]*)/.exec(doc.location.toString())[1] + "#" + name);
  } else if (icon.dom) {
    node.appendChild(icon.dom.cloneNode(true));
  } else {
    var text = icon.text,
      css = icon.css;
    node.appendChild(doc.createElement("span")).textContent = text || '';
    if (css) node.firstChild.style.cssText = css;
  }
  return node;
}
function buildSVG(root, name, data) {
  var _ref = root.nodeType == 9 ? [root, root.body] : [root.ownerDocument || document, root],
    _ref2 = _slicedToArray(_ref, 2),
    doc = _ref2[0],
    top = _ref2[1];
  var collection = doc.getElementById(prefix$2 + "-collection");
  if (!collection) {
    collection = doc.createElementNS(SVG, "svg");
    collection.id = prefix$2 + "-collection";
    collection.style.display = "none";
    top.insertBefore(collection, top.firstChild);
  }
  var sym = doc.createElementNS(SVG, "symbol");
  sym.id = name;
  sym.setAttribute("viewBox", "0 0 " + data.width + " " + data.height);
  var path = sym.appendChild(doc.createElementNS(SVG, "path"));
  path.setAttribute("d", data.path);
  collection.appendChild(sym);
}
var prefix$1 = "ProseMirror-menu";
var MenuItem = function () {
  function MenuItem(spec) {
    _classCallCheck(this, MenuItem);
    this.spec = spec;
  }
  _createClass(MenuItem, [{
    key: "render",
    value: function render(view) {
      var spec = this.spec;
      var dom = spec.render ? spec.render(view) : spec.icon ? getIcon(view.root, spec.icon) : spec.label ? crel("button", null, translate(view, spec.label)) : null;
      if (!dom) throw new RangeError("MenuItem without icon or label property");
      if (spec.title) {
        var title = typeof spec.title === "function" ? spec.title(view.state) : spec.title;
        dom.setAttribute("title", translate(view, title));
      }
      if (spec["class"]) dom.classList.add(spec["class"]);
      if (spec.css) dom.style.cssText += spec.css;
      dom.addEventListener("click", function (e) {
        if (!dom.classList.contains(prefix$1 + "-disabled")) {
          var setFocus = document.activeElement == dom || document.activeElement == view.dom;
          spec.run(view.state, view.dispatch, view, e);
          if (setFocus && document.activeElement == dom) view.focus();
        }
      });
      dom.addEventListener("mousedown", function (e) {
        return e.preventDefault();
      });
      function update(state) {
        if (spec.select) {
          var selected = spec.select(state);
          dom.style.display = selected ? "" : "none";
          if (!selected) return false;
        }
        var enabled = true;
        if (spec.enable) {
          enabled = spec.enable(state) || false;
          setClass(dom, prefix$1 + "-disabled", !enabled);
          dom.setAttribute("aria-disabled", (!enabled).toString());
        }
        if (spec.active) {
          var active = enabled && spec.active(state) || false;
          setClass(dom, prefix$1 + "-active", active);
          dom.setAttribute("aria-pressed", active.toString());
        }
        return true;
      }
      return {
        dom: dom,
        update: update
      };
    }
  }]);
  return MenuItem;
}();
function translate(view, text) {
  return view._props.translate ? view._props.translate(text) : text;
}
var lastMenuEvent = {
  time: 0,
  node: null
};
function markMenuEvent(e) {
  lastMenuEvent.time = Date.now();
  lastMenuEvent.node = e.target;
}
function isMenuEvent(wrapper) {
  return Date.now() - 100 < lastMenuEvent.time && lastMenuEvent.node && wrapper.contains(lastMenuEvent.node);
}
var Dropdown = function () {
  function Dropdown(content) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    _classCallCheck(this, Dropdown);
    this.options = options;
    this.focusables = [];
    this.focusIndex = 0;
    this.focusTimeout = -1;
    this.options = options || {};
    this.content = Array.isArray(content) ? content : [content];
  }
  _createClass(Dropdown, [{
    key: "render",
    value: function render(view) {
      var _this = this;
      var content = renderDropdownItems(this.content, view);
      this.focusables = content.focusables;
      var win = view.dom.ownerDocument.defaultView || window;
      var btn = crel("button", {
        "class": prefix$1 + "-dropdown " + (this.options["class"] || ""),
        style: this.options.css,
        "aria-haspopup": "menu",
        "aria-expanded": "false"
      }, translate(view, this.options.label || ""));
      if (this.options.title) btn.setAttribute("title", translate(view, this.options.title));
      var wrap = crel("div", {
        "class": prefix$1 + "-dropdown-wrap"
      }, btn);
      var open = null;
      var listeningOnClose = null;
      var close = function close() {
        if (open && open.close()) {
          open = null;
          win.removeEventListener("click", listeningOnClose);
        }
      };
      btn.addEventListener("click", function (e) {
        markMenuEvent(e);
        if (open) {
          close();
        } else {
          open = _this.expand(wrap, content.dom, btn);
          win.addEventListener("click", listeningOnClose = function listeningOnClose() {
            if (!isMenuEvent(wrap)) close();
          });
          if (e.detail === 0) {
            var focusIndex = findFocusableIndex(_this.focusables, -1, 1);
            if (focusIndex != null) _this.setFocusIndex(focusIndex);
          }
          open.node.addEventListener("keydown", function (event) {
            markMenuEvent(event);
            if (keyboardMoveFocus(_this, event, "vertical")) ;else if (event.key === "Escape") {
              event.preventDefault();
              event.stopPropagation();
              close();
              btn.focus();
            }
          });
          open.node.addEventListener("focusout", function () {
            clearTimeout(_this.focusTimeout);
            _this.focusTimeout = setTimeout(function () {
              var active = win.document.activeElement;
              if (active && open && !open.node.contains(active)) close();
            }, 20);
          });
        }
      });
      btn.addEventListener("mousedown", function (e) {
        return e.preventDefault();
      });
      function update(state) {
        var inner = content.update(state);
        wrap.style.display = inner ? "" : "none";
        return inner;
      }
      return {
        dom: wrap,
        update: update,
        focusable: btn
      };
    }
  }, {
    key: "expand",
    value: function expand(dom, items, trigger) {
      var menuDOM = crel("div", {
        "class": prefix$1 + "-dropdown-menu " + (this.options["class"] || "")
      }, items);
      var done = false;
      function close() {
        if (done) return false;
        done = true;
        dom.removeChild(menuDOM);
        trigger.ariaControlsElements = [];
        trigger.setAttribute("aria-expanded", "false");
        return true;
      }
      dom.appendChild(menuDOM);
      trigger.ariaControlsElements = [items];
      trigger.setAttribute("aria-expanded", "true");
      return {
        close: close,
        node: menuDOM
      };
    }
  }, {
    key: "setFocusIndex",
    value: function setFocusIndex(index) {
      if (this.focusables.length <= 1) return;
      this.focusables[this.focusIndex].setAttribute("tabindex", "-1");
      this.focusIndex = index;
      var nextFocusItem = this.focusables[index];
      nextFocusItem.setAttribute("tabindex", "0");
      nextFocusItem.focus();
    }
  }]);
  return Dropdown;
}();
function findFocusableIndex(focusables, startIndex, delta) {
  var length = focusables.length;
  for (var i = 0, index = startIndex + delta;; index += delta, i++) {
    var normIndex = (index + length) % length;
    if (focusables[normIndex].style.display != "none") return normIndex;
    if (i == length) return null;
  }
}
function keyboardMoveFocus(control, event, orientation) {
  var focusables = control.focusables,
    focusIndex = control.focusIndex;
  var move = event.key == (orientation == "vertical" ? "ArrowDown" : "ArrowRight") ? findFocusableIndex(focusables, focusIndex, 1) : event.key == (orientation == "vertical" ? "ArrowUp" : "ArrowLeft") ? findFocusableIndex(focusables, focusIndex, -1) : event.key == "Home" ? findFocusableIndex(focusables, -1, 1) : event.key == "End" ? findFocusableIndex(focusables, focusables.length, -1) : null;
  if (move == null) return false;
  event.preventDefault();
  event.stopPropagation();
  control.setFocusIndex(move);
  return true;
}
function renderDropdownItems(items, view) {
  var elts = [],
    focusables = [],
    updates = [];
  for (var i = 0; i < items.length; i++) {
    var item = items[i];
    var _item$render = item.render(view),
      dom = _item$render.dom,
      _update = _item$render.update,
      focusable = _item$render.focusable;
    elts.push(crel("li", {
      "class": "".concat(prefix$1, "-dropdown-item"),
      role: "menuitem",
      "tabindex": "-1"
    }, dom));
    focusables.push(focusable || dom);
    updates.push(_update);
  }
  function update(state) {
    var something = false;
    for (var _i = 0; _i < elts.length; _i++) {
      var _dom = elts[_i],
        up = updates[_i](state);
      if (up) something = true;
      _dom.style.display = up ? "" : "none";
    }
    return something;
  }
  return {
    dom: crel("ul", {
      role: "menu"
    }, elts),
    update: update,
    focusables: focusables
  };
}
function combineUpdates(updates, nodes) {
  return function (state) {
    var something = false;
    for (var i = 0; i < updates.length; i++) {
      var up = updates[i](state);
      nodes[i].style.display = up ? "" : "none";
      if (up) something = true;
    }
    return something;
  };
}
var DropdownSubmenu = function () {
  function DropdownSubmenu(content) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    _classCallCheck(this, DropdownSubmenu);
    this.options = options;
    this.focusables = [];
    this.focusIndex = 0;
    this.focusTimeout = -1;
    this.content = Array.isArray(content) ? content : [content];
  }
  _createClass(DropdownSubmenu, [{
    key: "render",
    value: function render(view) {
      var _this2 = this;
      var items = renderDropdownItems(this.content, view);
      this.focusables = items.focusables;
      var win = view.dom.ownerDocument.defaultView || window;
      var btn = crel("button", {
        "class": prefix$1 + "-submenu-label"
      }, translate(view, this.options.label || ""));
      var wrap = crel("div", {
        "class": prefix$1 + "-submenu-wrap"
      }, btn, crel("div", {
        "class": prefix$1 + "-submenu"
      }, items.dom));
      var _listeningOnClose = null;
      var openSubmenu = function openSubmenu(e) {
        e.preventDefault();
        e.stopPropagation();
        markMenuEvent(e);
        setClass(wrap, prefix$1 + "-submenu-wrap-active", true);
        if (!_listeningOnClose) win.addEventListener("click", _listeningOnClose = function listeningOnClose() {
          if (!isMenuEvent(wrap)) {
            wrap.classList.remove(prefix$1 + "-submenu-wrap-active");
            win.removeEventListener("click", _listeningOnClose);
            _listeningOnClose = null;
          }
        });
        if (!(e.type == "click" && e.detail)) {
          var focusIndex = findFocusableIndex(_this2.focusables, -1, 1);
          if (focusIndex != null) _this2.setFocusIndex(focusIndex);
        }
      };
      btn.addEventListener("click", openSubmenu);
      btn.addEventListener("keydown", function (e) {
        if (e.key === "ArrowRight") openSubmenu(e);
      });
      btn.addEventListener("mousedown", function (e) {
        return e.preventDefault();
      });
      items.dom.addEventListener("keydown", function (event) {
        markMenuEvent(event);
        if (keyboardMoveFocus(_this2, event, "vertical")) ;else if (event.key === "Escape" || event.key === "ArrowLeft") {
          event.preventDefault();
          event.stopPropagation();
          setClass(wrap, prefix$1 + "-submenu-wrap-active", false);
          btn.focus();
        }
      });
      items.dom.addEventListener("focusout", function () {
        clearTimeout(_this2.focusTimeout);
        _this2.focusTimeout = setTimeout(function () {
          var active = win.document.activeElement;
          if (active && !items.dom.contains(active)) wrap.classList.remove(prefix$1 + "-submenu-wrap-active");
        }, 20);
      });
      function update(state) {
        var inner = items.update(state);
        wrap.style.display = inner ? "" : "none";
        return inner;
      }
      return {
        dom: wrap,
        update: update,
        focusable: btn
      };
    }
  }, {
    key: "setFocusIndex",
    value: function setFocusIndex(index) {
      if (this.focusables.length <= 1) return;
      this.focusables[this.focusIndex].setAttribute("tabindex", "-1");
      this.focusIndex = index;
      var nextFocusItem = this.focusables[index];
      nextFocusItem.setAttribute("tabindex", "0");
      nextFocusItem.focus();
    }
  }]);
  return DropdownSubmenu;
}();
function renderGrouped(view, content) {
  var result = document.createDocumentFragment();
  var updates = [],
    focusables = [],
    separators = [];
  for (var i = 0; i < content.length; i++) {
    var items = content[i],
      localUpdates = [],
      localNodes = [];
    for (var j = 0; j < items.length; j++) {
      var _items$j$render = items[j].render(view),
        dom = _items$j$render.dom,
        _update2 = _items$j$render.update,
        focusable = _items$j$render.focusable;
      focusables.push(focusable || dom);
      var span = crel("span", {
        "class": prefix$1 + "item"
      }, dom);
      result.appendChild(span);
      localNodes.push(span);
      localUpdates.push(_update2);
    }
    if (localUpdates.length) {
      updates.push(combineUpdates(localUpdates, localNodes));
      if (i < content.length - 1) separators.push(result.appendChild(separator()));
    }
  }
  function update(state) {
    var something = false,
      needSep = false;
    for (var _i2 = 0; _i2 < updates.length; _i2++) {
      var hasContent = updates[_i2](state);
      if (_i2) separators[_i2 - 1].style.display = needSep && hasContent ? "" : "none";
      needSep = hasContent;
      if (hasContent) something = true;
    }
    return something;
  }
  return {
    dom: result,
    update: update,
    focusables: focusables
  };
}
function separator() {
  return crel("span", {
    "class": prefix$1 + "separator",
    role: "separator"
  });
}
var icons = {
  join: {
    width: 800,
    height: 900,
    path: "M0 75h800v125h-800z M0 825h800v-125h-800z M250 400h100v-100h100v100h100v100h-100v100h-100v-100h-100z"
  },
  lift: {
    width: 1024,
    height: 1024,
    path: "M219 310v329q0 7-5 12t-12 5q-8 0-13-5l-164-164q-5-5-5-13t5-13l164-164q5-5 13-5 7 0 12 5t5 12zM1024 749v109q0 7-5 12t-12 5h-987q-7 0-12-5t-5-12v-109q0-7 5-12t12-5h987q7 0 12 5t5 12zM1024 530v109q0 7-5 12t-12 5h-621q-7 0-12-5t-5-12v-109q0-7 5-12t12-5h621q7 0 12 5t5 12zM1024 310v109q0 7-5 12t-12 5h-621q-7 0-12-5t-5-12v-109q0-7 5-12t12-5h621q7 0 12 5t5 12zM1024 91v109q0 7-5 12t-12 5h-987q-7 0-12-5t-5-12v-109q0-7 5-12t12-5h987q7 0 12 5t5 12z"
  },
  selectParentNode: {
    text: "\u2B1A",
    css: "font-weight: bold"
  },
  undo: {
    width: 1024,
    height: 1024,
    path: "M761 1024c113-206 132-520-313-509v253l-384-384 384-384v248c534-13 594 472 313 775z"
  },
  redo: {
    width: 1024,
    height: 1024,
    path: "M576 248v-248l384 384-384 384v-253c-446-10-427 303-313 509-280-303-221-789 313-775z"
  },
  strong: {
    width: 805,
    height: 1024,
    path: "M317 869q42 18 80 18 214 0 214-191 0-65-23-102-15-25-35-42t-38-26-46-14-48-6-54-1q-41 0-57 5 0 30-0 90t-0 90q0 4-0 38t-0 55 2 47 6 38zM309 442q24 4 62 4 46 0 81-7t62-25 42-51 14-81q0-40-16-70t-45-46-61-24-70-8q-28 0-74 7 0 28 2 86t2 86q0 15-0 45t-0 45q0 26 0 39zM0 950l1-53q8-2 48-9t60-15q4-6 7-15t4-19 3-18 1-21 0-19v-37q0-561-12-585-2-4-12-8t-25-6-28-4-27-2-17-1l-2-47q56-1 194-6t213-5q13 0 39 0t38 0q40 0 78 7t73 24 61 40 42 59 16 78q0 29-9 54t-22 41-36 32-41 25-48 22q88 20 146 76t58 141q0 57-20 102t-53 74-78 48-93 27-100 8q-25 0-75-1t-75-1q-60 0-175 6t-132 6z"
  },
  em: {
    width: 585,
    height: 1024,
    path: "M0 949l9-48q3-1 46-12t63-21q16-20 23-57 0-4 35-165t65-310 29-169v-14q-13-7-31-10t-39-4-33-3l10-58q18 1 68 3t85 4 68 1q27 0 56-1t69-4 56-3q-2 22-10 50-17 5-58 16t-62 19q-4 10-8 24t-5 22-4 26-3 24q-15 84-50 239t-44 203q-1 5-7 33t-11 51-9 47-3 32l0 10q9 2 105 17-1 25-9 56-6 0-18 0t-18 0q-16 0-49-5t-49-5q-78-1-117-1-29 0-81 5t-69 6z"
  },
  code: {
    width: 896,
    height: 1024,
    path: "M608 192l-96 96 224 224-224 224 96 96 288-320-288-320zM288 192l-288 320 288 320 96-96-224-224 224-224-96-96z"
  },
  link: {
    width: 951,
    height: 1024,
    path: "M832 694q0-22-16-38l-118-118q-16-16-38-16-24 0-41 18 1 1 10 10t12 12 8 10 7 14 2 15q0 22-16 38t-38 16q-8 0-15-2t-14-7-10-8-12-12-10-10q-18 17-18 41 0 22 16 38l117 118q15 15 38 15 22 0 38-14l84-83q16-16 16-38zM430 292q0-22-16-38l-117-118q-16-16-38-16-22 0-38 15l-84 83q-16 16-16 38 0 22 16 38l118 118q15 15 38 15 24 0 41-17-1-1-10-10t-12-12-8-10-7-14-2-15q0-22 16-38t38-16q8 0 15 2t14 7 10 8 12 12 10 10q18-17 18-41zM941 694q0 68-48 116l-84 83q-47 47-116 47-69 0-116-48l-117-118q-47-47-47-116 0-70 50-119l-50-50q-49 50-118 50-68 0-116-48l-118-118q-48-48-48-116t48-116l84-83q47-47 116-47 69 0 116 48l117 118q47 47 47 116 0 70-50 119l50 50q49-50 118-50 68 0 116 48l118 118q48 48 48 116z"
  },
  bulletList: {
    width: 768,
    height: 896,
    path: "M0 512h128v-128h-128v128zM0 256h128v-128h-128v128zM0 768h128v-128h-128v128zM256 512h512v-128h-512v128zM256 256h512v-128h-512v128zM256 768h512v-128h-512v128z"
  },
  orderedList: {
    width: 768,
    height: 896,
    path: "M320 512h448v-128h-448v128zM320 768h448v-128h-448v128zM320 128v128h448v-128h-448zM79 384h78v-256h-36l-85 23v50l43-2v185zM189 590c0-36-12-78-96-78-33 0-64 6-83 16l1 66c21-10 42-15 67-15s32 11 32 28c0 26-30 58-110 112v50h192v-67l-91 2c49-30 87-66 87-113l1-1z"
  },
  blockquote: {
    width: 640,
    height: 896,
    path: "M0 448v256h256v-256h-128c0 0 0-128 128-128v-128c0 0-256 0-256 256zM640 320v-128c0 0-256 0-256 256v256h256v-256h-128c0 0 0-128 128-128z"
  }
};
var joinUpItem = new MenuItem({
  title: "Join with above block",
  run: prosemirrorCommands.joinUp,
  select: function select(state) {
    return prosemirrorCommands.joinUp(state);
  },
  icon: icons.join
});
var liftItem = new MenuItem({
  title: "Lift out of enclosing block",
  run: prosemirrorCommands.lift,
  select: function select(state) {
    return prosemirrorCommands.lift(state);
  },
  icon: icons.lift
});
var selectParentNodeItem = new MenuItem({
  title: "Select parent node",
  run: prosemirrorCommands.selectParentNode,
  select: function select(state) {
    return prosemirrorCommands.selectParentNode(state);
  },
  icon: icons.selectParentNode
});
var undoItem = new MenuItem({
  title: "Undo last change",
  run: prosemirrorHistory.undo,
  enable: function enable(state) {
    return prosemirrorHistory.undo(state);
  },
  icon: icons.undo
});
var redoItem = new MenuItem({
  title: "Redo last undone change",
  run: prosemirrorHistory.redo,
  enable: function enable(state) {
    return prosemirrorHistory.redo(state);
  },
  icon: icons.redo
});
function wrapItem(nodeType, options) {
  var passedOptions = {
    run: function run(state, dispatch) {
      return prosemirrorCommands.wrapIn(nodeType, options.attrs)(state, dispatch);
    },
    select: function select(state) {
      return prosemirrorCommands.wrapIn(nodeType, options.attrs)(state);
    }
  };
  for (var prop in options) passedOptions[prop] = options[prop];
  return new MenuItem(passedOptions);
}
function blockTypeItem(nodeType, options) {
  var command = prosemirrorCommands.setBlockType(nodeType, options.attrs);
  var passedOptions = {
    run: command,
    enable: function enable(state) {
      return command(state);
    },
    active: function active(state) {
      var _state$selection = state.selection,
        $from = _state$selection.$from,
        to = _state$selection.to,
        node = _state$selection.node;
      if (node) return node.hasMarkup(nodeType, options.attrs);
      return to <= $from.end() && $from.parent.hasMarkup(nodeType, options.attrs);
    }
  };
  for (var prop in options) passedOptions[prop] = options[prop];
  return new MenuItem(passedOptions);
}
function setClass(dom, cls, on) {
  if (on) dom.classList.add(cls);else dom.classList.remove(cls);
}
var prefix = "ProseMirror-menubar";
function isIOS() {
  if (typeof navigator == "undefined") return false;
  var agent = navigator.userAgent;
  return !/Edge\/\d/.test(agent) && /AppleWebKit/.test(agent) && /Mobile\/\w+/.test(agent);
}
function menuBar(options) {
  return new prosemirrorState.Plugin({
    view: function view(editorView) {
      return new MenuBarView(editorView, options);
    }
  });
}
var MenuBarView = function () {
  function MenuBarView(editorView, options) {
    var _this3 = this;
    _classCallCheck(this, MenuBarView);
    this.editorView = editorView;
    this.options = options;
    this.focusables = [];
    this.focusIndex = 0;
    this.spacer = null;
    this.maxHeight = 0;
    this.widthForMaxHeight = 0;
    this.floating = false;
    this.scrollHandler = null;
    this.root = editorView.root;
    this.wrapper = crel("div", {
      "class": prefix + "-wrapper"
    });
    this.menu = this.wrapper.appendChild(crel("div", {
      "class": prefix,
      role: "toolbar"
    }));
    this.menu.className = prefix;
    this.menu.ariaControlsElements = [editorView.dom];
    if (editorView.dom.parentNode) editorView.dom.parentNode.replaceChild(this.wrapper, editorView.dom);
    if (options.position === "after") {
      this.wrapper.insertBefore(editorView.dom, this.wrapper.firstChild);
    } else {
      this.wrapper.appendChild(editorView.dom);
    }
    var _renderGrouped = renderGrouped(this.editorView, this.options.content),
      dom = _renderGrouped.dom,
      update = _renderGrouped.update,
      focusables = _renderGrouped.focusables;
    this.contentUpdate = update;
    this.focusables = focusables;
    this.menu.appendChild(dom);
    if (options.floating && !isIOS()) {
      this.updateFloat();
      var potentialScrollers = getAllWrapping(this.wrapper);
      this.scrollHandler = function (e) {
        var root = _this3.editorView.root;
        if (!(root.body || root).contains(_this3.wrapper)) potentialScrollers.forEach(function (el) {
          return el.removeEventListener("scroll", _this3.scrollHandler);
        });else _this3.updateFloat(e.target.getBoundingClientRect ? e.target : undefined);
      };
      potentialScrollers.forEach(function (el) {
        return el.addEventListener('scroll', _this3.scrollHandler);
      });
    }
    var _loop = function _loop(i) {
      var focusable = focusables[i];
      if (i) focusable.setAttribute("tabindex", "-1");
      focusable.addEventListener("focus", function () {
        if (_this3.focusIndex === i) return;
        var prevFocusItem = _this3.focusables[_this3.focusIndex];
        prevFocusItem.setAttribute("tabindex", "-1");
        focusable.setAttribute("tabindex", "0");
        _this3.focusIndex = i;
      });
    };
    for (var i = 0; i < focusables.length; i++) {
      _loop(i);
    }
    this.menu.addEventListener("keydown", function (event) {
      keyboardMoveFocus(_this3, event, "horizontal");
    });
    this.update();
  }
  _createClass(MenuBarView, [{
    key: "setFocusIndex",
    value: function setFocusIndex(index) {
      if (this.focusables.length <= 1) return;
      this.focusables[this.focusIndex].setAttribute("tabindex", "-1");
      this.focusIndex = index;
      var nextFocusItem = this.focusables[index];
      nextFocusItem.setAttribute("tabindex", "0");
      nextFocusItem.focus();
    }
  }, {
    key: "update",
    value: function update() {
      if (this.editorView.root != this.root) {
        var _renderGrouped2 = renderGrouped(this.editorView, this.options.content),
          dom = _renderGrouped2.dom,
          update = _renderGrouped2.update;
        this.contentUpdate = update;
        this.menu.replaceChild(dom, this.menu.firstChild);
        this.root = this.editorView.root;
      }
      var active = this.editorView.dom.ownerDocument.activeElement == this.focusables[this.focusIndex];
      this.contentUpdate(this.editorView.state);
      if (active && this.focusables[this.focusIndex].style.display == "none") {
        var next = findFocusableIndex(this.focusables, this.focusIndex, 1);
        if (next != null) this.setFocusIndex(next);
      }
      if (this.floating) {
        this.updateScrollCursor();
      } else {
        if (this.menu.offsetWidth != this.widthForMaxHeight) {
          this.widthForMaxHeight = this.menu.offsetWidth;
          this.maxHeight = 0;
        }
        if (this.menu.offsetHeight > this.maxHeight) {
          this.maxHeight = this.menu.offsetHeight;
          this.menu.style.minHeight = this.maxHeight + "px";
        }
      }
    }
  }, {
    key: "updateScrollCursor",
    value: function updateScrollCursor() {
      var selection = this.editorView.root.getSelection();
      if (!selection.focusNode) return;
      var rects = selection.getRangeAt(0).getClientRects();
      var selRect = rects[selectionIsInverted(selection) ? 0 : rects.length - 1];
      if (!selRect) return;
      var menuRect = this.menu.getBoundingClientRect();
      if (selRect.top < menuRect.bottom && selRect.bottom > menuRect.top) {
        var scrollable = findWrappingScrollable(this.wrapper);
        if (scrollable) scrollable.scrollTop -= menuRect.bottom - selRect.top;
      }
    }
  }, {
    key: "updateFloat",
    value: function updateFloat(scrollAncestor) {
      var parent = this.wrapper,
        editorRect = parent.getBoundingClientRect(),
        top = scrollAncestor ? Math.max(0, scrollAncestor.getBoundingClientRect().top) : 0;
      if (this.floating) {
        if (editorRect.top >= top || editorRect.bottom < this.menu.offsetHeight + 10) {
          this.floating = false;
          this.menu.style.position = this.menu.style.left = this.menu.style.top = this.menu.style.width = "";
          this.menu.style.display = "";
          this.spacer.parentNode.removeChild(this.spacer);
          this.spacer = null;
        } else {
          var border = (parent.offsetWidth - parent.clientWidth) / 2;
          this.menu.style.left = editorRect.left + border + "px";
          this.menu.style.display = editorRect.top > (this.editorView.dom.ownerDocument.defaultView || window).innerHeight ? "none" : "";
          if (scrollAncestor) this.menu.style.top = top + "px";
        }
      } else {
        if (editorRect.top < top && editorRect.bottom >= this.menu.offsetHeight + 10) {
          this.floating = true;
          var menuRect = this.menu.getBoundingClientRect();
          this.menu.style.left = menuRect.left + "px";
          this.menu.style.width = menuRect.width + "px";
          if (scrollAncestor) this.menu.style.top = top + "px";
          this.menu.style.position = "fixed";
          this.spacer = crel("div", {
            "class": prefix + "-spacer",
            style: "height: ".concat(menuRect.height, "px")
          });
          parent.insertBefore(this.spacer, this.menu);
        }
      }
    }
  }, {
    key: "destroy",
    value: function destroy() {
      if (this.wrapper.parentNode) this.wrapper.parentNode.replaceChild(this.editorView.dom, this.wrapper);
    }
  }]);
  return MenuBarView;
}();
function selectionIsInverted(selection) {
  if (selection.anchorNode == selection.focusNode) return selection.anchorOffset > selection.focusOffset;
  return selection.anchorNode.compareDocumentPosition(selection.focusNode) == Node.DOCUMENT_POSITION_FOLLOWING;
}
function findWrappingScrollable(node) {
  for (var cur = node.parentNode; cur; cur = cur.parentNode) if (cur.scrollHeight > cur.clientHeight) return cur;
}
function getAllWrapping(node) {
  var res = [node.ownerDocument.defaultView || window];
  for (var cur = node.parentNode; cur; cur = cur.parentNode) res.push(cur);
  return res;
}
exports.Dropdown = Dropdown;
exports.DropdownSubmenu = DropdownSubmenu;
exports.MenuItem = MenuItem;
exports.blockTypeItem = blockTypeItem;
exports.icons = icons;
exports.joinUpItem = joinUpItem;
exports.liftItem = liftItem;
exports.menuBar = menuBar;
exports.redoItem = redoItem;
exports.renderGrouped = renderGrouped;
exports.selectParentNodeItem = selectParentNodeItem;
exports.undoItem = undoItem;
exports.wrapItem = wrapItem;