dmn-js-drd/lib/features/modeling/ElementFactory.js

A decision requirements diagram view for dmn-js

import { assign } from 'min-dash';
import inherits from 'inherits-browser';
import { is } from 'dmn-js-shared/lib/util/ModelUtil';
import BaseElementFactory from 'diagram-js/lib/core/ElementFactory';
export var BUSINESS_KNOWLEDGE_MODEL_SIZE = {
  width: 135,
  height: 46
};
export var DECISION_SIZE = {
  width: 180,
  height: 80
};
export var INPUT_DATA_SIZE = {
  width: 125,
  height: 45
};
export var KNOWLEDGE_SOURCE_SIZE = {
  width: 100,
  height: 63
};

/**
 * A drd-aware factory for diagram-js shapes
 */
export default function ElementFactory(drdFactory) {
  BaseElementFactory.call(this);
  this._drdFactory = drdFactory;
}
inherits(ElementFactory, BaseElementFactory);
ElementFactory.$inject = ['drdFactory'];
ElementFactory.prototype.baseCreate = BaseElementFactory.prototype.create;
ElementFactory.prototype.create = function (elementType, attrs) {
  return this.createDrdElement(elementType, attrs);
};
ElementFactory.prototype.createDrdElement = function (elementType, attrs) {
  var drdFactory = this._drdFactory;
  var size;
  attrs = attrs || {};
  var businessObject = attrs.businessObject;
  if (!businessObject) {
    if (!attrs.type) {
      throw new Error('no shape type specified');
    }
    businessObject = drdFactory.create(attrs.type);
  }
  if (!businessObject.di) {
    if (elementType === 'connection') {
      businessObject.di = drdFactory.createDiEdge(businessObject, []);
    } else if (elementType === 'shape') {
      businessObject.di = drdFactory.createDiShape(businessObject, {});
    }
  }
  size = this._getDefaultSize(businessObject);
  attrs = assign({
    businessObject: businessObject,
    id: businessObject.id
  }, size, attrs);
  return this.baseCreate(elementType, attrs);
};
ElementFactory.prototype._getDefaultSize = function (semantic) {
  if (is(semantic, 'dmn:BusinessKnowledgeModel')) {
    return BUSINESS_KNOWLEDGE_MODEL_SIZE;
  }
  if (is(semantic, 'dmn:Decision')) {
    return DECISION_SIZE;
  }
  if (is(semantic, 'dmn:InputData')) {
    return INPUT_DATA_SIZE;
  }
  if (is(semantic, 'dmn:KnowledgeSource')) {
    return KNOWLEDGE_SOURCE_SIZE;
  }
  return {
    width: 100,
    height: 80
  };
};
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