Index: Riskeer/HeightStructures/src/Riskeer.HeightStructures.Plugin/HeightStructuresPlugin.cs
===================================================================
diff -u -r8b7fa9b31132e2e73edfec3202289852c40fbfeb -rb63eeab5b28145e0ab5d4f3335674894703957e1
--- Riskeer/HeightStructures/src/Riskeer.HeightStructures.Plugin/HeightStructuresPlugin.cs	(.../HeightStructuresPlugin.cs)	(revision 8b7fa9b31132e2e73edfec3202289852c40fbfeb)
+++ Riskeer/HeightStructures/src/Riskeer.HeightStructures.Plugin/HeightStructuresPlugin.cs	(.../HeightStructuresPlugin.cs)	(revision b63eeab5b28145e0ab5d4f3335674894703957e1)
@@ -286,10 +286,9 @@
 
         private static bool CloseHeightStructuresFailureMechanismViewForData(HeightStructuresFailureMechanismView view, object data)
         {
-            var assessmentSection = data as IAssessmentSection;
             var failureMechanism = data as HeightStructuresFailureMechanism;
 
-            return assessmentSection != null
+            return data is IAssessmentSection assessmentSection
                        ? ReferenceEquals(view.AssessmentSection, assessmentSection)
                        : ReferenceEquals(view.FailureMechanism, failureMechanism);
         }
@@ -315,18 +314,16 @@
 
         private static bool CloseFailureMechanismResultViewForData(HeightStructuresFailureMechanismResultView view, object o)
         {
-            var assessmentSection = o as IAssessmentSection;
-            var failureMechanism = o as HeightStructuresFailureMechanism;
-            var failureMechanismContext = o as IFailureMechanismContext<HeightStructuresFailureMechanism>;
-            if (assessmentSection != null)
+            if (o is IAssessmentSection assessmentSection)
             {
                 return assessmentSection
                        .GetFailureMechanisms()
                        .OfType<HeightStructuresFailureMechanism>()
                        .Any(fm => ReferenceEquals(view.FailureMechanism.SectionResults, fm.SectionResults));
             }
 
-            if (failureMechanismContext != null)
+            var failureMechanism = o as HeightStructuresFailureMechanism;
+            if (o is IFailureMechanismContext<HeightStructuresFailureMechanism> failureMechanismContext)
             {
                 failureMechanism = failureMechanismContext.WrappedData;
             }
@@ -731,17 +728,21 @@
                                                                     object parentData,
                                                                     TreeViewControl treeViewControl)
         {
-            StructuresCalculation<HeightStructuresInput> calculation = context.WrappedData;
+            StructuresCalculationScenario<HeightStructuresInput> calculation = context.WrappedData;
             var changeHandler = new ClearIllustrationPointsOfStructuresCalculationHandler(GetInquiryHelper(), calculation);
 
+            IInquiryHelper inquiryHelper = GetInquiryHelper();
+            IViewCommands viewCommands = Gui.ViewCommands;
+
             var builder = new RiskeerContextMenuBuilder(Gui.Get(context, treeViewControl));
             return builder.AddExportItem()
                           .AddSeparator()
                           .AddDuplicateCalculationItem(calculation, context)
                           .AddSeparator()
                           .AddRenameItem()
-                          .AddUpdateForeshoreProfileOfCalculationItem(calculation, GetInquiryHelper(),
-                                                                      SynchronizeCalculationWithForeshoreProfileHelper.UpdateForeshoreProfileDerivedCalculationInput)
+                          .AddUpdateForeshoreProfileOfCalculationItem(
+                              calculation, inquiryHelper,
+                              SynchronizeCalculationWithForeshoreProfileHelper.UpdateForeshoreProfileDerivedCalculationInput)
                           .AddCustomItem(CreateUpdateStructureItem(context))
                           .AddSeparator()
                           .AddValidateCalculationItem(
@@ -753,8 +754,14 @@
                               Calculate,
                               EnableValidateAndCalculateMenuItemForCalculation)
                           .AddSeparator()
-                          .AddClearCalculationOutputItem(calculation)
-                          .AddClearIllustrationPointsOfCalculationItem(() => IllustrationPointsHelper.HasIllustrationPoints(calculation), changeHandler)
+                          .AddClearCalculationOutputItem(
+                              () => calculation.HasOutput,
+                              CreateClearCalculationOutputChangeHandler(new[]
+                              {
+                                  calculation
+                              }, inquiryHelper, viewCommands))
+                          .AddClearIllustrationPointsOfCalculationItem(
+                              () => IllustrationPointsHelper.HasIllustrationPoints(calculation), changeHandler)
                           .AddDeleteItem()
                           .AddSeparator()
                           .AddCollapseAllItem()
Index: Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs
===================================================================
diff -u -rf4359dde195c85255ac1aa2373710dc709f65a56 -rb63eeab5b28145e0ab5d4f3335674894703957e1
--- Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs)	(revision f4359dde195c85255ac1aa2373710dc709f65a56)
+++ Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs)	(revision b63eeab5b28145e0ab5d4f3335674894703957e1)
@@ -27,6 +27,7 @@
 using Core.Common.Base;
 using Core.Common.Controls.TreeView;
 using Core.Common.Gui;
+using Core.Common.Gui.Commands;
 using Core.Common.Gui.ContextMenu;
 using Core.Common.Gui.Forms.MainWindow;
 using Core.Common.Gui.TestUtil.ContextMenu;
@@ -184,8 +185,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -223,9 +225,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
-
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -293,8 +295,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -334,8 +337,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -377,8 +381,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -422,10 +427,10 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(g => g.MainWindow).Return(mainWindow);
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -480,10 +485,10 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(g => g.MainWindow).Return(mainWindow);
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -544,10 +549,10 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(g => g.MainWindow).Return(mainWindow);
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -585,8 +590,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -617,8 +623,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -661,8 +668,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -692,8 +700,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -724,8 +733,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -768,8 +778,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -803,8 +814,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -847,8 +859,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -894,8 +907,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -946,7 +960,8 @@
             {
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -1023,7 +1038,8 @@
             {
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -1054,7 +1070,6 @@
         public void GivenValidCalculation_WhenCalculatingFromContextMenu_ThenOutputSetLogMessagesAddedAndUpdateObserver()
         {
             // Given
-            var mainWindow = mocks.DynamicMock<IMainWindow>();
             var observer = mocks.StrictMock<IObserver>();
             observer.Expect(o => o.UpdateObserver());
 
@@ -1093,7 +1108,8 @@
             {
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(g => g.Get(calculationContext, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(g => g.MainWindow).Return(mainWindow);
+                gui.Stub(g => g.MainWindow).Return(mocks.DynamicMock<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
 
                 var calculatorFactory = mocks.Stub<IHydraRingCalculatorFactory>();
                 calculatorFactory.Expect(cf => cf.CreateStructuresCalculator<StructuresOvertoppingCalculationInput>(
@@ -1178,7 +1194,8 @@
             {
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(g => g.Get(calculationContext, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -1201,6 +1218,181 @@
         }
 
         [Test]
+        public void ContextMenuStrip_CalculationGroupWithCalculationsWithoutOutput_ContextMenuItemClearCalculationsOutputEnabled()
+        {
+            // Setup
+            var calculation = new StructuresCalculationScenario<HeightStructuresInput>
+            {
+                Output = new TestStructuresOutput()
+            };
+
+            IAssessmentSection assessmentSection = AssessmentSectionTestHelper.CreateAssessmentSectionStub(null, mocks, "invalidFilePath");
+
+            var nodeData = new HeightStructuresCalculationScenarioContext(
+                calculation, new CalculationGroup(), new HeightStructuresFailureMechanism(), assessmentSection);
+
+            var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+            using (var treeViewControl = new TreeViewControl())
+            {
+                var gui = mocks.Stub<IGui>();
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
+                mocks.ReplayAll();
+
+                plugin.Gui = gui;
+
+                using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // Call
+                    ToolStripItem toolStripItem = contextMenu.Items[contextMenuClearIndex];
+
+                    // Assert
+                    Assert.IsTrue(toolStripItem.Enabled);
+                }
+            }
+        }
+
+        [Test]
+        public void ContextMenuStrip_CalculationGroupWithCalculationsWithoutOutput_ContextMenuItemClearCalculationsOutputDisabled()
+        {
+            // Setup
+            var calculation = new StructuresCalculationScenario<HeightStructuresInput>();
+
+            IAssessmentSection assessmentSection = AssessmentSectionTestHelper.CreateAssessmentSectionStub(null, mocks, "invalidFilePath");
+
+            var nodeData = new HeightStructuresCalculationScenarioContext(
+                calculation, new CalculationGroup(), new HeightStructuresFailureMechanism(), assessmentSection);
+
+            var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+            using (var treeViewControl = new TreeViewControl())
+            {
+                var gui = mocks.Stub<IGui>();
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
+                mocks.ReplayAll();
+
+                plugin.Gui = gui;
+
+                using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // Call
+                    ToolStripItem toolStripItem = contextMenu.Items[contextMenuClearIndex];
+
+                    // Assert
+                    Assert.IsFalse(toolStripItem.Enabled);
+                }
+            }
+        }
+
+        [Test]
+        public void GivenCalculationsWithOutput_WhenClearAllCalculationsOutputClickedAndAborted_ThenInquiryAndCalculationsOutputNotCleared()
+        {
+            // Given
+            var calculation = new StructuresCalculationScenario<HeightStructuresInput>
+            {
+                Output = new TestStructuresOutput()
+            };
+
+            var calculationObserver = mocks.StrictMock<IObserver>();
+            calculation.Attach(calculationObserver);
+
+            IAssessmentSection assessmentSection = AssessmentSectionTestHelper.CreateAssessmentSectionStub(null, mocks, "invalidFilePath");
+
+            var nodeData = new HeightStructuresCalculationScenarioContext(
+                calculation, new CalculationGroup(), new HeightStructuresFailureMechanism(), assessmentSection);
+            var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+            var messageBoxText = "";
+            DialogBoxHandler = (name, wnd) =>
+            {
+                var helper = new MessageBoxTester(wnd);
+                messageBoxText = helper.Text;
+
+                helper.ClickCancel();
+            };
+
+            using (var treeViewControl = new TreeViewControl())
+            {
+                var gui = mocks.Stub<IGui>();
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.StrictMock<IViewCommands>());
+                mocks.ReplayAll();
+
+                plugin.Gui = gui;
+
+                using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // When
+                    contextMenu.Items[contextMenuClearIndex].PerformClick();
+
+                    // Then
+                    Assert.AreEqual("Weet u zeker dat u de uitvoer van deze berekening wilt wissen?", messageBoxText);
+
+                    Assert.IsTrue(calculation.HasOutput);
+                }
+            }
+        }
+
+        [Test]
+        public void GivenCalculationsWithOutput_WhenClearAllCalculationsOutputClickedAndContinued_ThenInquiryAndOutputViewsClosedAndCalculationsOutputCleared()
+        {
+            // Given
+            var calculation = new StructuresCalculationScenario<HeightStructuresInput>
+            {
+                Output = new TestStructuresOutput()
+            };
+
+            var calculationObserver = mocks.StrictMock<IObserver>();
+            calculationObserver.Expect(o => o.UpdateObserver());
+            calculation.Attach(calculationObserver);
+
+            IAssessmentSection assessmentSection = AssessmentSectionTestHelper.CreateAssessmentSectionStub(null, mocks, "invalidFilePath");
+
+            var nodeData = new HeightStructuresCalculationScenarioContext(
+                calculation, new CalculationGroup(), new HeightStructuresFailureMechanism(), assessmentSection);
+            var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+            var messageBoxText = "";
+            DialogBoxHandler = (name, wnd) =>
+            {
+                var helper = new MessageBoxTester(wnd);
+                messageBoxText = helper.Text;
+
+                helper.ClickOk();
+            };
+
+            using (var treeViewControl = new TreeViewControl())
+            {
+                var viewCommands = mocks.StrictMock<IViewCommands>();
+                viewCommands.Expect(vc => vc.RemoveAllViewsForItem(calculation.Output));
+
+                var gui = mocks.Stub<IGui>();
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(viewCommands);
+                mocks.ReplayAll();
+
+                plugin.Gui = gui;
+
+                using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // When
+                    contextMenu.Items[contextMenuClearIndex].PerformClick();
+
+                    // Then
+                    Assert.AreEqual("Weet u zeker dat u de uitvoer van deze berekening wilt wissen?", messageBoxText);
+
+                    Assert.IsFalse(calculation.HasOutput);
+                }
+            }
+        }
+
+        [Test]
         public void ContextMenuStrip_CalculationWithIllustrationPoints_ContextMenuItemClearIllustrationPointsEnabled()
         {
             // Setup
@@ -1218,8 +1410,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -1253,8 +1446,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -1300,8 +1494,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
@@ -1349,8 +1544,9 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocks.Stub<IGui>();
-                gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
-                gui.Stub(cmp => cmp.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
+                gui.Stub(g => g.ViewCommands).Return(mocks.Stub<IViewCommands>());
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;