fix(modeling/behaviors): add behavior for deleting boundaries on receive tasks after connecting to event based gateway

lib/features/modeling/behavior/ConnectEventBasedGatewayBehavior.js

@@ -0,0 +1,47 @@
+import inherits from 'inherits';
+
+import CommandInterceptor from 'diagram-js/lib/command/CommandInterceptor';
+
+import { is } from '../../../util/ModelUtil';
+
+import {
+  filter
+} from 'min-dash';
+
+
+/**
+ * Behavior for deleting boundaries from receive task after connecting them with event based gateway
+ */
+export default function ConnectEventBasedGatewayBehavior(eventBus, modeling) {
+
+  CommandInterceptor.call(this, eventBus);
+
+  function extractBoundaryEvents(element) {
+    return filter(element.attachers, function(attacher) {
+      return is(attacher, 'bpmn:BoundaryEvent');
+    });
+  }
+
+  this.postExecute('connection.create', function(context) {
+    var source = context.context.source,
+        target = context.context.target,
+        boundaries = extractBoundaryEvents(target);
+
+    if (
+      is(source, 'bpmn:EventBasedGateway') &&
+      is(target, 'bpmn:ReceiveTask') &&
+      boundaries.length > 0
+    ) {
+      modeling.removeElements(boundaries);
+    }
+
+  });
+}
+
+ConnectEventBasedGatewayBehavior.$inject = [
+  'eventBus',
+  'modeling',
+  'bpmnRules'
+];
+
+inherits(ConnectEventBasedGatewayBehavior, CommandInterceptor);

lib/features/modeling/behavior/index.js

@@ -1,5 +1,6 @@
 import AdaptiveLabelPositioningBehavior from './AdaptiveLabelPositioningBehavior';
 import AppendBehavior from './AppendBehavior';
+import ConnectEventBasedGatewayBehavior from './ConnectEventBasedGatewayBehavior';
 import CopyPasteBehavior from './CopyPasteBehavior';
 import CreateBoundaryEventBehavior from './CreateBoundaryEventBehavior';
 import CreateDataObjectBehavior from './CreateDataObjectBehavior';
@@ -25,6 +26,7 @@ export default {
   __init__: [
     'adaptiveLabelPositioningBehavior',
     'appendBehavior',
+    'connectEventBasedGatewayBehavior',
     'copyPasteBehavior',
     'createBoundaryEventBehavior',
     'createDataObjectBehavior',
@@ -48,6 +50,7 @@ export default {
   ],
   adaptiveLabelPositioningBehavior: [ 'type', AdaptiveLabelPositioningBehavior ],
   appendBehavior: [ 'type', AppendBehavior ],
+  connectEventBasedGatewayBehavior: [ 'type', ConnectEventBasedGatewayBehavior ],
   copyPasteBehavior: [ 'type', CopyPasteBehavior ],
   createBoundaryEventBehavior: [ 'type', CreateBoundaryEventBehavior ],
   createDataObjectBehavior: [ 'type', CreateDataObjectBehavior ],

test/spec/features/modeling/behavior/ConnectEventBasedGatewayBehavior.bpmn

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" id="Definitions_1ipuizk" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="2.0.3">
+  <bpmn:process id="Process_1" isExecutable="true">
+    <bpmn:eventBasedGateway id="EventBasedGateway_1" />
+    <bpmn:receiveTask id="ReceiveTask_1" />
+    <bpmn:boundaryEvent id="BoundaryEvent_1" attachedToRef="ReceiveTask_1" />
+  </bpmn:process>
+  <bpmndi:BPMNDiagram id="BPMNDiagram_1">
+    <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_1">
+      <bpmndi:BPMNShape id="EventBasedGateway_1cu8t9h_di" bpmnElement="EventBasedGateway_1">
+        <dc:Bounds x="172" y="118" width="50" height="50" />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="ReceiveTask_1vk05s6_di" bpmnElement="ReceiveTask_1">
+        <dc:Bounds x="300" y="103" width="100" height="80" />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="BoundaryEvent_0xg8xmx_di" bpmnElement="BoundaryEvent_1">
+        <dc:Bounds x="331" y="165" width="36" height="36" />
+      </bpmndi:BPMNShape>
+    </bpmndi:BPMNPlane>
+  </bpmndi:BPMNDiagram>
+</bpmn:definitions>

test/spec/features/modeling/behavior/ConnectEventBasedGatewayBehaviorSpec.js

@@ -0,0 +1,36 @@
+import {
+  bootstrapModeler,
+  inject
+} from 'test/TestHelper';
+
+import modelingModule from 'lib/features/modeling';
+import coreModule from 'lib/core';
+
+
+describe('features/modeling/behavior - connect event based gateway to receive task with boundary', function() {
+
+  var testModules = [ coreModule, modelingModule ];
+
+  var diagramXML = require('./ConnectEventBasedGatewayBehavior.bpmn');
+
+  beforeEach(bootstrapModeler(diagramXML, { modules: testModules }));
+
+
+  it('should remove the boundary event from the receive task after connecting the task with an event based gateway',
+    inject(function(modeling, elementRegistry) {
+
+      // given
+      var eventBasedGateway = elementRegistry.get('EventBasedGateway_1'),
+          receiveTask = elementRegistry.get('ReceiveTask_1'),
+          boundaryEvent = elementRegistry.get('BoundaryEvent_1');
+
+      // when
+      modeling.connect(eventBasedGateway, receiveTask, {
+        type: 'bpmn:SequenceFlow'
+      });
+
+      // then
+      expect(elementRegistry.get(boundaryEvent.id)).to.be.undefined;
+    }));
+
+});