dmn-js-boxed-expression/lib/features/modeling/behavior/NameChangeBehavior.js

A boxed expression view for dmn-js

import CommandInterceptor from 'diagram-js/lib/command/CommandInterceptor';
import { is } from 'dmn-js-shared/lib/util/ModelUtil';
export default class NameChangeBehavior extends CommandInterceptor {
  static $inject = ['eventBus', 'modeling'];
  constructor(eventBus, modeling) {
    super(eventBus);
    this._modeling = modeling;
    this.postExecuted('element.updateProperties', this.updateName);
  }
  updateName = ({
    context
  }) => {
    const {
      element,
      properties
    } = context;
    if (!this.isNameChanged(properties)) {
      return;
    }
    if (this.isVariable(element)) {
      this.handleVariableNameChange(element);
    } else if (this.isVariableContainer(element)) {
      this.handleVariableContainerNameChange(element);
    }
  };
  isNameChanged(properties) {
    return 'name' in properties;
  }
  isVariable(element) {
    const parent = getParent(element);
    return is(element, 'dmn:InformationItem') && parent && parent.get('variable') === element;
  }
  isVariableContainer(element) {
    const variable = element.get('variable');
    return variable && is(variable, 'dmn:InformationItem');
  }
  handleVariableNameChange(variable) {
    const parent = getParent(variable),
      newName = variable.get('name');
    if (newName === parent.get('name')) {
      return;
    }
    this._modeling.updateProperties(parent, {
      name: newName
    });
  }
  handleVariableContainerNameChange(container) {
    const variable = container.get('variable'),
      newName = container.get('name');
    if (variable && newName !== variable.get('name')) {
      this._modeling.updateProperties(variable, {
        name: newName
      });
    }
  }
}

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

function getParent(element) {
  return element.$parent;
}
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