Definition Activator

When you have created a definition model you may want to use it to create a definition. The most popular use case is to create a start definition for the designer.

In the below model we created a simple definition model with a single step called pingIp. Also we want to place this step in the root sequence.

interface PingIpStep extends Step {
  type: 'pingIp';
  componentType: 'task';
  properties: {
    ip: string;
  }
}

const definitionModel = createDefinitionModel(model => {
  model.root((root) => {
    root.sequence().value(createSequenceValueModel({
      sequence: ['pingIp']
    }));
  });

  model.steps([
    createStepModel<PingIpStep>('pingIp', 'task', step => {
      step.property('ip').value(
        createStringValueModel({
          defaultValue: '127.0.0.1'
        })
      );
    })
  ]);
});

const editorProvider = EditorProvider.create(definitionModel, {
  uidGenerator: Uid.next
});

To activate the whole definition you need to call the activateDefinition method of the EditorProvider class.

const definition: Definition = editorProvider.activateDefinition();
/* =>
{
  "properties": {},
  "sequence": [
    {
      "id": "1fc989343ad4f48f48ee9b9b03c32fb5",
      "type": "pingIp",
      "componentType": "task",
      "properties": {
        "ip": "127.0.0.1"
      },
      "name": "PingIp"
    }
  ]
}
*/

You can also activate only a single step by calling the activateStep method.

const step = editorProvider.activateStep('pingIp') as PingIpStep;
/* =>
{
  "id": "1fc989343ad4f48f48ee9b9b03c32fb5",
  "type": "pingIp",
  "componentType": "task",
  "properties": {
    "ip": "127.0.0.1"
  },
  "name": "PingIp"
}
*/

The EditorProvider class should be used only in the browser. If you want to activate a definition on the server you should use the ModelActivator class.

import { ModelActivator } from 'sequential-workflow-editor-model';

const uidGenerator = () => /* return unique id */;
const activator = ModelActivator.create(definitionModel, uidGenerator);

const definition = activator.activateDefinition();
const step = activator.activateStep('pingIp');