dmn-js-decision-table-custom-z/lib/features/rules/DecisionTableModelingRules.js

A decision table view for dmn-js

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import { every } from 'min-dash';
import { Row, Col } from 'table-js/lib/model';
import { isInput, isOutput } from 'dmn-js-shared/lib/util/ModelUtil';
import RuleProvider from 'diagram-js/lib/features/rules/RuleProvider';
var HIGH_PRIORITY = 2000;

var DecisionTableModelingRules = /*#__PURE__*/function (_RuleProvider) {
  _inherits(DecisionTableModelingRules, _RuleProvider);

  function DecisionTableModelingRules(eventBus, sheet) {
    var _this;

    _classCallCheck(this, DecisionTableModelingRules);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(DecisionTableModelingRules).call(this, eventBus));
    _this._sheet = sheet;
    return _this;
  }

  _createClass(DecisionTableModelingRules, [{
    key: "init",
    value: function init() {
      var _this2 = this;

      this.addRule('col.move', HIGH_PRIORITY, function (_ref) {
        var col = _ref.col,
            index = _ref.index;

        var _this2$_sheet$getRoot = _this2._sheet.getRoot(),
            businessObject = _this2$_sheet$getRoot.businessObject,
            input = businessObject.input;

        if (isInput(col)) {
          return index < input.length;
        } else {
          return index >= input.length;
        }
      });
      this.addRule('col.remove', HIGH_PRIORITY, function (_ref2) {
        var col = _ref2.col;

        var _this2$_sheet$getRoot2 = _this2._sheet.getRoot(),
            cols = _this2$_sheet$getRoot2.cols;

        if (isOutput(col)) {
          return cols.filter(function (c) {
            return isOutput(c);
          }).length > 1;
        }

        return true;
      }); // a rule that is aware of the data structure coming from copy and paste

      this.addRule('paste', HIGH_PRIORITY, function (_ref3) {
        var data = _ref3.data,
            target = _ref3.target;

        if (!data || !target) {
          return false;
        }

        var root = data.root;

        if (target instanceof Row) {
          return _this2.canPasteRows(root);
        }

        if (target instanceof Col) {
          return _this2.canPasteCols(root, target);
        }

        return false;
      });
    }
  }, {
    key: "canPasteRows",
    value: function canPasteRows(root) {
      var _this$_sheet$getRoot = this._sheet.getRoot(),
          cols = _this$_sheet$getRoot.cols;

      return every(root, function (descriptor) {
        if (descriptor.type !== 'row') {
          return false;
        }

        if (descriptor.cells.length !== cols.length) {
          return false;
        }

        return every(descriptor.cells, function (cellDescriptor, index) {
          if (isInput(cols[index])) {
            return cellDescriptor.businessObject.$type === 'dmn:UnaryTests';
          } else {
            return cellDescriptor.businessObject.$type === 'dmn:LiteralExpression';
          }
        });
      });
    }
  }, {
    key: "canPasteCols",
    value: function canPasteCols(root, targetCol) {
      var _this$_sheet$getRoot2 = this._sheet.getRoot(),
          rows = _this$_sheet$getRoot2.rows;

      return every(root, function (descriptor) {
        if (descriptor.type !== 'col') {
          return false;
        }

        if (descriptor.cells.length !== rows.length) {
          return false;
        }

        if (isInput(targetCol)) {
          return descriptor.businessObject.$type === 'dmn:InputClause';
        } else {
          return descriptor.businessObject.$type === 'dmn:OutputClause';
        }
      });
    }
  }]);

  return DecisionTableModelingRules;
}(RuleProvider);

export { DecisionTableModelingRules as default };
DecisionTableModelingRules.$inject = ['eventBus', 'sheet'];
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