feat: replace elements on create

Closes #1340

lib/features/modeling/behavior/ReplaceElementBehaviour.js

@@ -24,6 +24,19 @@ export default function ReplaceElementBehaviour(
   this._elementRegistry = elementRegistry;
   this._selection = selection;
 
+  // replace elements on create, e.g. during copy-paste
+  this.postExecuted([ 'elements.create' ], 500, function(event) {
+    var context = event.context,
+        target = context.parent,
+        elements = context.elements;
+
+    var canReplace = bpmnRules.canReplace(elements, target);
+
+    if (canReplace) {
+      this.replaceElements(elements, canReplace.replacements);
+    }
+  }, this);
+
   // replace elements on move
   this.postExecuted([ 'elements.move' ], 500, function(event) {
     var context = event.context,

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

@@ -21,7 +21,9 @@ import {
 var ATTACH = { attach: true };
 
 
-describe('features/modeling - move start event behavior', function() {
+describe('features/modeling - replace element behavior', function() {
+
+  describe('<shape.move>', function() {
 
     var testModules = [
       replacePreviewModule,
@@ -452,5 +454,66 @@ describe('features/modeling - move start event behavior', function() {
       }));
 
     });
-
+  });
+
+
+  describe('shape.create', function() {
+
+    var diagramXML = require('../../../../fixtures/bpmn/event-sub-processes.bpmn');
+
+    beforeEach(bootstrapModeler(diagramXML, {
+      modules: [
+        replacePreviewModule,
+        modelingModule,
+        coreModule
+      ]
+    }));
+
+
+    it('should replace Timer Start Event with None Start Event when created in SubProcess',
+      inject(function(elementRegistry, modeling, elementFactory) {
+
+        // given
+        var subProcess = elementRegistry.get('SubProcess_3'),
+            startEvent = elementFactory.createShape(
+              { type: 'bpmn:StartEvent', eventDefinitionType: 'bpmn:TimerEventDefinition' }),
+            id = startEvent.businessObject.id;
+
+        // when
+        modeling.createElements(
+          startEvent, { x: subProcess.x + 30, y: subProcess.y + 30 }, subProcess);
+
+        // then
+        var createdEvent = elementRegistry.get(id);
+
+        expect(createdEvent).to.exist;
+        expect(createdEvent.businessObject.eventDefinitions).to.not.exist;
+      })
+    );
+
+
+    it('should NOT replace Timer Start Event when created in EventSubProcess',
+      inject(function(elementRegistry, modeling, elementFactory) {
+
+        // given
+        var subProcess = elementRegistry.get('SubProcess_2'),
+            startEvent = elementFactory.createShape(
+              { type: 'bpmn:StartEvent', eventDefinitionType: 'bpmn:TimerEventDefinition' }),
+            id = startEvent.businessObject.id;
+
+        // when
+        modeling.createElements(
+          startEvent, { x: subProcess.x + 30, y: subProcess.y + 30 }, subProcess);
+
+        // then
+        var createdEvent = elementRegistry.get(id);
+
+        expect(createdEvent).to.eql(startEvent);
+        expect(createdEvent.businessObject.eventDefinitions).to.have.lengthOf(1);
+        expect(
+          is(createdEvent.businessObject.eventDefinitions[0], 'bpmn:TimerEventDefinition')
+        ).to.be.true;
+      })
+    );
+  });
 });