bpmn-js-example-react-properties-panel's Introduction

React Properties Panel for bpmn-js

This example demonstrates a custom properties panel for bpmn-js written in React.

About

The component PropertiesView implements the properties panel.

The component is mounted via standard React utilities and receives the BPMN modeler instance as props:

ReactDOM.render(
  <PropertiesView modeler={ modeler } />,
  container
);

As part of its life-cycle hooks it hooks up with bpmn-js change and selection events to react to editor changes:

class PropertiesView extends React.Component {

  ...
  
  componentDidMount() {
  
    const {
       modeler
    } = this.props;
    
    modeler.on('selection.changed', (e) => {
      this.setElement(e.newSelection[0]);
    });

    modeler.on('element.changed', (e) => {
      this.setElement(e.element);
    });
  }

}

Rendering the component we may display element properties and apply changes:

class PropertiesView extends React.Component {
  
  ...
  
  render() {
  
    const {
      element
    } = this.state;
    
    return (
      <div>
        <fieldset>
          <label>id</label>
          <span>{ element.id }</span>
        </fieldset>

        <fieldset>
          <label>name</label>
          <input value={ element.businessObject.name || '' } onChange={ (event) => {
            this.updateName(event.target.value);
          } } />
        </fieldset>
      </div>
    );
  }
  
  updateName(newName) {
  
    const {
      element
    } = this.state;
    
    const { 
      modeler
    } = this.props;
    
    const modeling = modeler.get('modeling');
    
    modeling.updateLabel(element, newName);
  }
}