feat(context-pad): append text annotations on groups

Related to #1327

lib/features/context-pad/ContextPadProvider.js

@@ -400,6 +400,12 @@ ContextPadProvider.prototype.getContextPadEntries = function(element) {
     });
   }
 
+  if (is(businessObject, 'bpmn:Group')) {
+    assign(actions, {
+      'append.text-annotation': appendAction('bpmn:TextAnnotation', 'bpmn-icon-text-annotation')
+    });
+  }
+
   // delete element entry, only show if allowed by rules
   var deleteAllowed = rules.allowed('elements.delete', { elements: [ element ] });
 

test/spec/features/context-pad/ContextPad.activation.bpmn

@@ -11,7 +11,11 @@
     <bpmn2:dataStoreReference id="DataStoreReference" />
     <bpmn2:dataObject id="DataObject_1" name="Data Object 1"/>
     <bpmn2:dataObjectReference id="DataObjectReference" dataObjectRef="DataObject_1"/>
+    <bpmn2:group id="Group_1" categoryValueRef="CategoryValue_1" />
   </bpmn2:process>
+  <bpmn2:category id="Category_1">
+    <bpmn2:categoryValue id="CategoryValue_1" />
+  </bpmn2:category>
   <bpmndi:BPMNDiagram id="BPMNDiagram_1">
     <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_1">
       <bpmndi:BPMNShape id="_BPMNShape_EventBasedGateway_2" bpmnElement="EventBasedGateway_1">
@@ -47,6 +51,9 @@
           <dc:Bounds height="21.0" width="149.0" x="257.0" y="367.0"/>
         </bpmndi:BPMNLabel>
       </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="Group_1_di" bpmnElement="Group_1">
+        <dc:Bounds x="40" y="410" width="190" height="110" />
+      </bpmndi:BPMNShape>
     </bpmndi:BPMNPlane>
   </bpmndi:BPMNDiagram>
 </bpmn2:definitions>

test/spec/features/context-pad/ContextPadProviderSpec.js

@@ -281,6 +281,16 @@ describe('features - context-pad', function() {
       ]);
     }));
 
+
+    it('should provide Group entries', inject(function() {
+
+      expectContextPadEntries('Group_1', [
+        'append.text-annotation',
+        'delete',
+        '!replace'
+      ]);
+    }));
+
   });