dmn-js-shared/lib/base/EditingManager.js

Shared components used by dmn-js

import Manager from './Manager';
import Ids from 'ids';
import { isAny } from '../util/ModelUtil';
export default class EditingManager extends Manager {
  _init(options) {
    super._init(options);

    // hook ID collection into the modeler
    this.on('import.parse.complete', event => {
      if (!event.error) {
        this._collectIds(event.definitions, event.elementsById);
      }
    });
    this.on('destroy', () => {
      this._moddle.ids.clear();
    });
    this.on('viewer.created', ({
      viewer
    }) => {
      viewer.on('elements.changed', ({
        elements
      }) => {
        var viewsChanged = elements.some(function (e) {
          return isAny(e, ['dmn:Decision', 'dmn:Definitions', 'dmn:BusinessKnowledgeModel']);
        });
        if (viewsChanged) {
          this._updateViews();
        }
      });
    });
  }

  /**
   * Collect ids processed during parsing of the
   * definitions object.
   *
   * @param {ModdleElement} definitions
   * @param {Array<ModdleElement>} elementsById
   */
  _collectIds(definitions, elementsById) {
    var moddle = definitions.$model,
      ids = moddle.ids,
      id;

    // remove references from previous import
    ids.clear();
    for (id in elementsById) {
      ids.claim(id, elementsById[id]);
    }
  }
  _createModdle(options) {
    var moddle = super._createModdle(options);

    // attach ids to moddle to be able to track
    // and validated ids in the DMN XML document
    // tree
    moddle.ids = new Ids([32, 36, 1]);
    return moddle;
  }
}
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