chore(copy-paste): temporarily prevent consecutive paste

This prevents users from creating invalid
models due to IDs not properly being
generated on consecutive paste (#686).

Closes #688.

lib/features/copy-paste/BpmnCopyPaste.js

@@ -30,7 +30,9 @@ function removeProperties(element, properties) {
   });
 }
 
-function BpmnCopyPaste(bpmnFactory, eventBus, copyPaste, clipboard, moddle, canvas, bpmnRules) {
+function BpmnCopyPaste(
+    bpmnFactory, eventBus, copyPaste,
+    clipboard, canvas, bpmnRules) {
 
   var helper = new ModelCloneHelper(eventBus);
 
@@ -138,6 +140,14 @@ function BpmnCopyPaste(bpmnFactory, eventBus, copyPaste, clipboard, moddle, canv
       'triggeredByEvent'
     ]);
   });
+
+
+  eventBus.on('commandStack.elements.paste.postExecuted', function() {
+    // temporarily disable multi paste until #686
+    // is addressed
+    clipboard.clear();
+  });
+
 }
 
 
@@ -146,7 +156,6 @@ BpmnCopyPaste.$inject = [
   'eventBus',
   'copyPaste',
   'clipboard',
-  'moddle',
   'canvas',
   'bpmnRules'
 ];

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

@@ -58,6 +58,38 @@ describe('features/copy-paste', function() {
     });
 
 
+    it('should forbid multi paste', inject(
+      function(elementRegistry, canvas, copyPaste) {
+        // given
+        var element = elementRegistry.get('SubProcess_1kd6ist'),
+            rootElement = canvas.getRootElement();
+
+        // when
+        copyPaste.copy(element);
+
+        copyPaste.paste({
+          element: rootElement,
+          point: {
+            x: 600,
+            y: 100
+          }
+        });
+
+        copyPaste.paste({
+          element: rootElement,
+          point: {
+            x: 600,
+            y: 275
+          }
+        });
+
+        // then
+        // pasted was only once
+        expect(rootElement.children).to.have.length(2);
+      }
+    ));
+
+
     describe('integration', function() {
 
       it('should retain label\'s relative position',
@@ -489,6 +521,7 @@ describe('features/copy-paste', function() {
       it('multiple participants', inject(integrationTest([ 'Participant_0pgdgt4', 'Participant_1id96b4' ])));
 
       it('multiple participants', inject(integrationTest([ 'Participant_0pgdgt4', 'Participant_1id96b4' ])));
+
     });
 
   });