text: /**
   * @license
   * Copyright 2018 Google Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  import { __assign, __extends } from "tslib";
  import { MDCFoundation } from '../base/foundation';
  import { cssClasses as listCssClasses } from '../list/constants';
  import { MDCMenuSurfaceFoundation } from '../menu-surface/foundation';
  import { cssClasses, DefaultFocusState, numbers, strings } from './constants';
  var MDCMenuFoundation = /** @class */ (function (_super) {
      __extends(MDCMenuFoundation, _super);
      function MDCMenuFoundation(adapter) {
          var _this = _super.call(this, __assign(__assign({}, MDCMenuFoundation.defaultAdapter), adapter)) || this;
          _this.closeAnimationEndTimerId = 0;
          _this.defaultFocusState = DefaultFocusState.LIST_ROOT;
          _this.selectedIndex = -1;
          return _this;
      }
      Object.defineProperty(MDCMenuFoundation, "cssClasses", {
          get: function () {
              return cssClasses;
          },
          enumerable: false,
          configurable: true
      });
      Object.defineProperty(MDCMenuFoundation, "strings", {
          get: function () {
              return strings;
          },
          enumerable: false,
          configurable: true
      });
      Object.defineProperty(MDCMenuFoundation, "numbers", {
          get: function () {
              return numbers;
          },
          enumerable: false,
          configurable: true
      });
      Object.defineProperty(MDCMenuFoundation, "defaultAdapter", {
          /**
           * @see {@link MDCMenuAdapter} for typing information on parameters and return types.
           */
          get: function () {
              // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.
              return {
                  addClassToElementAtIndex: function () { return undefined; },
                  removeClassFromElementAtIndex: function () { return undefined; },
                  addAttributeToElementAtIndex: function () { return undefined; },
                  removeAttributeFromElementAtIndex: function () { return undefined; },
                  getAttributeFromElementAtIndex: function () { return null; },
                  elementContainsClass: function () { return false; },
                  closeSurface: function () { return undefined; },
                  getElementIndex: function () { return -1; },
                  notifySelected: function () { return undefined; },
                  getMenuItemCount: function () { return 0; },
                  focusItemAtIndex: function () { return undefined; },
                  focusListRoot: function () { return undefined; },
                  getSelectedSiblingOfItemAtIndex: function () { return -1; },
                  isSelectableItemAtIndex: function () { return false; },
              };
              // tslint:enable:object-literal-sort-keys
          },
          enumerable: false,
          configurable: true
      });
      MDCMenuFoundation.prototype.destroy = function () {
          if (this.closeAnimationEndTimerId) {
              clearTimeout(this.closeAnimationEndTimerId);
          }
          this.adapter.closeSurface();
      };
      MDCMenuFoundation.prototype.handleKeydown = function (evt) {
          var key = evt.key, keyCode = evt.keyCode;
          var isTab = key === 'Tab' || keyCode === 9;
          if (isTab) {
              this.adapter.closeSurface(/** skipRestoreFocus */ true);
          }
      };
      MDCMenuFoundation.prototype.handleItemAction = function (listItem) {
          var _this = this;
          var index = this.adapter.getElementIndex(listItem);
          if (index < 0) {
              return;
          }
          this.adapter.notifySelected({ index: index });
          var skipRestoreFocus = this.adapter.getAttributeFromElementAtIndex(index, strings.SKIP_RESTORE_FOCUS) === 'true';
          this.adapter.closeSurface(skipRestoreFocus);
          // Wait for the menu to close before adding/removing classes that affect styles.
          this.closeAnimationEndTimerId = setTimeout(function () {
              // Recompute the index in case the menu contents have changed.
              var recomputedIndex = _this.adapter.getElementIndex(listItem);
              if (recomputedIndex >= 0 &&
                  _this.adapter.isSelectableItemAtIndex(recomputedIndex)) {
                  _this.setSelectedIndex(recomputedIndex);
              }
          }, MDCMenuSurfaceFoundation.numbers.TRANSITION_CLOSE_DURATION);
      };
      MDCMenuFoundation.prototype.handleMenuSurfaceOpened = function () {
          switch (this.defaultFocusState) {
              case DefaultFocusState.FIRST_ITEM:
                  this.adapter.focusItemAtIndex(0);
                  break;
              case DefaultFocusState.LAST_ITEM:
                  this.adapter.focusItemAtIndex(this.adapter.getMenuItemCount() - 1);
                  break;
              case DefaultFocusState.NONE:
                  // Do nothing.
                  break;
              default:
                  this.adapter.focusListRoot();
                  break;
          }
      };
      /**
       * Sets default focus state where the menu should focus every time when menu
       * is opened. Focuses the list root (`DefaultFocusState.LIST_ROOT`) element by
       * default.
       */
      MDCMenuFoundation.prototype.setDefaultFocusState = function (focusState) {
          this.defaultFocusState = focusState;
      };
      /** @return Index of the currently selected list item within the menu. */
      MDCMenuFoundation.prototype.getSelectedIndex = function () {
          return this.selectedIndex;
      };
      /**
       * Selects the list item at `index` within the menu.
       * @param index Index of list item within the menu.
       */
      MDCMenuFoundation.prototype.setSelectedIndex = function (index) {
          this.validatedIndex(index);
          if (!this.adapter.isSelectableItemAtIndex(index)) {
              throw new Error('MDCMenuFoundation: No selection group at specified index.');
          }
          var prevSelectedIndex = this.adapter.getSelectedSiblingOfItemAtIndex(index);
          if (prevSelectedIndex >= 0) {
              this.adapter.removeAttributeFromElementAtIndex(prevSelectedIndex, strings.ARIA_CHECKED_ATTR);
              this.adapter.removeClassFromElementAtIndex(prevSelectedIndex, cssClasses.MENU_SELECTED_LIST_ITEM);
          }
          this.adapter.addClassToElementAtIndex(index, cssClasses.MENU_SELECTED_LIST_ITEM);
          this.adapter.addAttributeToElementAtIndex(index, strings.ARIA_CHECKED_ATTR, 'true');
          this.selectedIndex = index;
      };
      /**
       * Sets the enabled state to isEnabled for the menu item at the given index.
       * @param index Index of the menu item
       * @param isEnabled The desired enabled state of the menu item.
       */
      MDCMenuFoundation.prototype.setEnabled = function (index, isEnabled) {
          this.validatedIndex(index);
          if (isEnabled) {
              this.adapter.removeClassFromElementAtIndex(index, listCssClasses.LIST_ITEM_DISABLED_CLASS);
              this.adapter.addAttributeToElementAtIndex(index, strings.ARIA_DISABLED_ATTR, 'false');
          }
          else {
              this.adapter.addClassToElementAtIndex(index, listCssClasses.LIST_ITEM_DISABLED_CLASS);
              this.adapter.addAttributeToElementAtIndex(index, strings.ARIA_DISABLED_ATTR, 'true');
          }
      };
      MDCMenuFoundation.prototype.validatedIndex = function (index) {
          var menuSize = this.adapter.getMenuItemCount();
          var isIndexInRange = index >= 0 && index < menuSize;
          if (!isIndexInRange) {
              throw new Error('MDCMenuFoundation: No list item at specified index.');
          }
      };
      return MDCMenuFoundation;
  }(MDCFoundation));
  export { MDCMenuFoundation };
  // tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.
  export default MDCMenuFoundation;
  //# sourceMappingURL=foundation.js.map