function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

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, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

import { addClass, hasClass } from './../../../helpers/dom/element';
import Border from './border';
import CellCoords from './cell/coords';
import CellRange from './cell/range';
/**
 * @class Selection
 */

var Selection =
/*#__PURE__*/
function () {
  /**
   * @param {Object} settings
   * @param {CellRange} cellRange
   */
  function Selection(settings, cellRange) {
    _classCallCheck(this, Selection);

    this.settings = settings;
    this.cellRange = cellRange || null;
    this.instanceBorders = {};
    this.classNames = [this.settings.className];
    this.classNameGenerator = this.linearClassNameGenerator(this.settings.className, this.settings.layerLevel);
  }
  /**
   * Each Walkontable clone requires it's own border for every selection. This method creates and returns selection
   * borders per instance
   *
   * @param {Walkontable} wotInstance
   * @returns {Border}
   */


  _createClass(Selection, [{
    key: "getBorder",
    value: function getBorder(wotInstance) {
      if (!this.instanceBorders[wotInstance.guid]) {
        this.instanceBorders[wotInstance.guid] = new Border(wotInstance, this.settings);
      }

      return this.instanceBorders[wotInstance.guid];
    }
    /**
     * Checks if selection is empty
     *
     * @returns {Boolean}
     */

  }, {
    key: "isEmpty",
    value: function isEmpty() {
      return this.cellRange === null;
    }
    /**
     * Adds a cell coords to the selection
     *
     * @param {CellCoords} coords
     */

  }, {
    key: "add",
    value: function add(coords) {
      if (this.isEmpty()) {
        this.cellRange = new CellRange(coords);
      } else {
        this.cellRange.expand(coords);
      }

      return this;
    }
    /**
     * If selection range from or to property equals oldCoords, replace it with newCoords. Return boolean
     * information about success
     *
     * @param {CellCoords} oldCoords
     * @param {CellCoords} newCoords
     * @returns {Boolean}
     */

  }, {
    key: "replace",
    value: function replace(oldCoords, newCoords) {
      if (!this.isEmpty()) {
        if (this.cellRange.from.isEqual(oldCoords)) {
          this.cellRange.from = newCoords;
          return true;
        }

        if (this.cellRange.to.isEqual(oldCoords)) {
          this.cellRange.to = newCoords;
          return true;
        }
      }

      return false;
    }
    /**
     * Clears selection
     *
     * @returns {Selection}
     */

  }, {
    key: "clear",
    value: function clear() {
      this.cellRange = null;
      return this;
    }
    /**
     * Returns the top left (TL) and bottom right (BR) selection coordinates
     *
     * @returns {Array} Returns array of coordinates for example `[1, 1, 5, 5]`
     */

  }, {
    key: "getCorners",
    value: function getCorners() {
      var topLeft = this.cellRange.getTopLeftCorner();
      var bottomRight = this.cellRange.getBottomRightCorner();
      return [topLeft.row, topLeft.col, bottomRight.row, bottomRight.col];
    }
    /**
     * Adds class name to cell element at given coords
     *
     * @param {Walkontable} wotInstance Walkontable instance
     * @param {Number} sourceRow Cell row coord
     * @param {Number} sourceColumn Cell column coord
     * @param {String} className Class name
     * @param {Boolean} [markIntersections=false] If `true`, linear className generator will be used to add CSS classes
     *                                            in a continuous way.
     * @returns {Selection}
     */

  }, {
    key: "addClassAtCoords",
    value: function addClassAtCoords(wotInstance, sourceRow, sourceColumn, className) {
      var markIntersections = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;
      var TD = wotInstance.wtTable.getCell(new CellCoords(sourceRow, sourceColumn));

      if (_typeof(TD) === 'object') {
        var cellClassName = className;

        if (markIntersections) {
          cellClassName = this.classNameGenerator(TD);

          if (!this.classNames.includes(cellClassName)) {
            this.classNames.push(cellClassName);
          }
        }

        addClass(TD, cellClassName);
      }

      return this;
    }
    /**
     * Generate helper for calculating classNames based on previously added base className.
     * The generated className is always generated as a continuation of the previous className. For example, when
     * the currently checked element has 'area-2' className the generated new className will be 'area-3'. When
     * the element doesn't have any classNames than the base className will be returned ('area');
     *
     * @param {String} baseClassName Base className to be used.
     * @param {Number} layerLevelOwner Layer level which the instance of the Selection belongs to.
     * @return {Function}
     */

  }, {
    key: "linearClassNameGenerator",
    value: function linearClassNameGenerator(baseClassName, layerLevelOwner) {
      // TODO: Make this recursive function Proper Tail Calls (TCO/PTC) friendly.
      return function calcClassName(element) {
        var previousIndex = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : -1;

        if (layerLevelOwner === 0 || previousIndex === 0) {
          return baseClassName;
        }

        var index = previousIndex >= 0 ? previousIndex : layerLevelOwner;
        var className = baseClassName;
        index -= 1;
        var previousClassName = index === 0 ? baseClassName : "".concat(baseClassName, "-").concat(index);

        if (hasClass(element, previousClassName)) {
          var currentLayer = index + 1;
          className = "".concat(baseClassName, "-").concat(currentLayer);
        } else {
          className = calcClassName(element, index);
        }

        return className;
      };
    }
    /**
     * @param wotInstance
     */

  }, {
    key: "draw",
    value: function draw(wotInstance) {
      if (this.isEmpty()) {
        if (this.settings.border) {
          this.getBorder(wotInstance).disappear();
        }

        return;
      }

      var renderedRows = wotInstance.wtTable.getRenderedRowsCount();
      var renderedColumns = wotInstance.wtTable.getRenderedColumnsCount();
      var corners = this.getCorners();

      var _corners = _slicedToArray(corners, 4),
          topRow = _corners[0],
          topColumn = _corners[1],
          bottomRow = _corners[2],
          bottomColumn = _corners[3];

      for (var column = 0; column < renderedColumns; column += 1) {
        var sourceCol = wotInstance.wtTable.columnFilter.renderedToSource(column);

        if (sourceCol >= topColumn && sourceCol <= bottomColumn) {
          var TH = wotInstance.wtTable.getColumnHeader(sourceCol);

          if (TH) {
            var newClasses = [];

            if (this.settings.highlightHeaderClassName) {
              newClasses.push(this.settings.highlightHeaderClassName);
            }

            if (this.settings.highlightColumnClassName) {
              newClasses.push(this.settings.highlightColumnClassName);
            }

            addClass(TH, newClasses);
          }
        }
      }

      for (var row = 0; row < renderedRows; row += 1) {
        var sourceRow = wotInstance.wtTable.rowFilter.renderedToSource(row);

        if (sourceRow >= topRow && sourceRow <= bottomRow) {
          var _TH = wotInstance.wtTable.getRowHeader(sourceRow);

          if (_TH) {
            var _newClasses = [];

            if (this.settings.highlightHeaderClassName) {
              _newClasses.push(this.settings.highlightHeaderClassName);
            }

            if (this.settings.highlightRowClassName) {
              _newClasses.push(this.settings.highlightRowClassName);
            }

            addClass(_TH, _newClasses);
          }
        }

        for (var _column = 0; _column < renderedColumns; _column += 1) {
          var _sourceCol = wotInstance.wtTable.columnFilter.renderedToSource(_column);

          if (sourceRow >= topRow && sourceRow <= bottomRow && _sourceCol >= topColumn && _sourceCol <= bottomColumn) {
            // selected cell
            if (this.settings.className) {
              this.addClassAtCoords(wotInstance, sourceRow, _sourceCol, this.settings.className, this.settings.markIntersections);
            }
          } else if (sourceRow >= topRow && sourceRow <= bottomRow) {
            // selection is in this row
            if (this.settings.highlightRowClassName) {
              this.addClassAtCoords(wotInstance, sourceRow, _sourceCol, this.settings.highlightRowClassName);
            }
          } else if (_sourceCol >= topColumn && _sourceCol <= bottomColumn) {
            // selection is in this column
            if (this.settings.highlightColumnClassName) {
              this.addClassAtCoords(wotInstance, sourceRow, _sourceCol, this.settings.highlightColumnClassName);
            }
          }

          var additionalSelectionClass = wotInstance.getSetting('onAfterDrawSelection', sourceRow, _sourceCol, corners, this.settings.layerLevel);

          if (typeof additionalSelectionClass === 'string') {
            this.addClassAtCoords(wotInstance, sourceRow, _sourceCol, additionalSelectionClass);
          }
        }
      }

      wotInstance.getSetting('onBeforeDrawBorders', corners, this.settings.className);

      if (this.settings.border) {
        // warning! border.appear modifies corners!
        this.getBorder(wotInstance).appear(corners);
      }
    }
  }]);

  return Selection;
}();

export default Selection;