dmn-js-decision-table/lib/features/view-drd/ViewDrd.js

A decision table view for dmn-js

import ViewDrdComponent from './components/ViewDrdComponent';
export default class ViewDrd {
  constructor(components, eventBus, injector, sheet) {
    this._injector = injector;
    this._sheet = sheet;
    components.onGetComponent('table.before', () => {
      if (this.canViewDrd()) {
        return ViewDrdComponent;
      }
    });
    eventBus.on('showDrd', () => {
      const parent = injector.get('_parent', false);
      const root = sheet.getRoot();
      const definitions = getDefinitions(root);
      if (!definitions) {
        return;
      }

      // open definitions
      const view = parent.getView(definitions);
      parent.open(view);
    });
  }
  canViewDrd() {
    const parent = this._injector.get('_parent', false);
    if (!parent) {
      return false;
    }
    const root = this._sheet.getRoot();
    const definitions = getDefinitions(root);
    return !!parent.getView(definitions);
  }
}
ViewDrd.$inject = ['components', 'eventBus', 'injector', 'sheet'];

// helpers //////////////////////

function getDefinitions(root) {
  const {
    businessObject
  } = root;

  // root might not have business object
  if (!businessObject) {
    return;
  }
  const decision = businessObject.$parent;
  const definitions = decision.$parent;
  return definitions;
}
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