feat(ModelingFeedback): add tooltip when pasting is disallowed

Only in the case of pasting outside of collaboration.

Closes camunda/camunda-modeler#252

lib/features/modeling/behavior/ModelingFeedback.js

@@ -2,6 +2,7 @@
 
 var is = require('../../../util/ModelUtil').is;
 
+var COLLAB_ERR_MSG = 'flow elements must be children of pools/participants';
 
 function ModelingFeedback(eventBus, tooltips, translate) {
 
@@ -18,16 +19,24 @@ function ModelingFeedback(eventBus, tooltips, translate) {
   }
 
   eventBus.on([ 'shape.move.rejected', 'create.rejected' ], function(event) {
-
     var context = event.context,
         shape = context.shape,
         target = context.target;
 
     if (is(target, 'bpmn:Collaboration') && is(shape, 'bpmn:FlowNode')) {
-      showError(event, translate('flow elements must be children of pools/participants'));
+      showError(event, translate(COLLAB_ERR_MSG));
     }
   });
 
+  eventBus.on([ 'elements.paste.rejected' ], function(event) {
+    var context = event.context,
+        position = context.position,
+        target = context.target;
+
+    if (is(target, 'bpmn:Collaboration')) {
+      showError(position, translate(COLLAB_ERR_MSG));
+    }
+  });
 }
 
 

lib/features/rules/BpmnRules.js

@@ -2,6 +2,7 @@
 
 var find = require('lodash/collection/find'),
     any = require('lodash/collection/any'),
+    every = require('lodash/collection/every'),
     filter = require('lodash/collection/filter'),
     forEach = require('lodash/collection/forEach'),
     inherits = require('inherits');
@@ -114,9 +115,10 @@ BpmnRules.prototype.init = function() {
   });
 
   this.addRule('elements.paste', function(context) {
-    var target = context.target;
+    var tree = context.tree,
+        target = context.target;
 
-    return canPaste(target);
+    return canPaste(tree, target);
   });
 
   this.addRule([ 'elements.delete' ], function(context) {
@@ -424,7 +426,14 @@ function canDrop(element, target, position) {
   return false;
 }
 
-function canPaste(target) {
+function canPaste(tree, target) {
+  var topLevel = tree[0];
+
+  if (is(target, 'bpmn:Collaboration')) {
+    return every(topLevel, function(e) {
+      return e.type === 'bpmn:Participant';
+    });
+  }
 
   // disallow to create elements on collapsed pools
   if (is(target, 'bpmn:Participant') && !isExpanded(target)) {

test/spec/features/copy-paste/BpmnCopyPasteSpec.js

@@ -2,10 +2,11 @@
 
 var TestHelper = require('../../../TestHelper');
 
-/* global bootstrapModeler, inject */
+/* global bootstrapModeler, inject, sinon */
 
 var bpmnCopyPasteModule = require('../../../../lib/features/copy-paste'),
     copyPasteModule = require('diagram-js/lib/features/copy-paste'),
+    tooltipsModule = require('diagram-js/lib/features/tooltips'),
     modelingModule = require('../../../../lib/features/modeling'),
     coreModule = require('../../../../lib/core');
 
@@ -40,7 +41,7 @@ function expectCollection(collA, collB, contains) {
 
 describe('features/copy-paste', function() {
 
-  var testModules = [ bpmnCopyPasteModule, copyPasteModule, modelingModule, coreModule ];
+  var testModules = [ bpmnCopyPasteModule, copyPasteModule, tooltipsModule, modelingModule, coreModule ];
 
   var basicXML = require('../../../fixtures/bpmn/features/copy-paste/basic.bpmn'),
       collaborationXML = require('../../../fixtures/bpmn/features/copy-paste/collaboration.bpmn'),
@@ -321,6 +322,38 @@ describe('features/copy-paste', function() {
           expect(tree.getLength()).to.equal(0);
         }));
 
+
+        it('pasting on a collaboration is disallowed when NOT every element is a Participant',
+        inject(function(copyPaste, elementRegistry, canvas, tooltips, eventBus) {
+          var task = elementRegistry.get('Task_13xbgyg'),
+              participant = elementRegistry.get('Participant_145muai'),
+              collaboration = canvas.getRootElement(),
+              tree;
+
+          var pasteRejected = sinon.spy(function() {});
+
+          // when
+          copyPaste.copy([ task, participant ]);
+
+          tree = new DescriptorTree(copyPaste._tree);
+
+          // then
+          expect(tree.getDepthLength(0)).to.equal(2);
+
+          // when
+          eventBus.on('elements.paste.rejected', pasteRejected);
+
+          copyPaste.paste({
+            element: collaboration,
+            point: {
+              x: 1000,
+              y: 1000
+            }
+          });
+
+          expect(pasteRejected).to.have.been.called;
+        }));
+
       });
 
     });