Don't close tab if processing

Re #26025

qt/scientific_interfaces/ISISReflectometry/GUI/MainWindow/MainWindowPresenter.cpp

@@ -5,6 +5,7 @@
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
 #include "MainWindowPresenter.h"
+#include "GUI/Common/IMessageHandler.h"
 #include "GUI/Runs/IRunsPresenter.h"
 #include "IMainWindowView.h"
 #include "MantidQtWidgets/Common/HelpWindow.h"
@@ -21,8 +22,10 @@ namespace CustomInterfaces {
  * we will manage
  */
 MainWindowPresenter::MainWindowPresenter(
-    IMainWindowView *view, BatchPresenterFactory batchPresenterFactory)
-    : m_view(view), m_batchPresenterFactory(std::move(batchPresenterFactory)) {
+    IMainWindowView *view, IMessageHandler *messageHandler,
+    BatchPresenterFactory batchPresenterFactory)
+    : m_view(view), m_messageHandler(messageHandler),
+      m_batchPresenterFactory(std::move(batchPresenterFactory)) {
   view->subscribe(this);
   for (auto *batchView : m_view->batches())
     addNewBatch(batchView);
@@ -34,6 +37,14 @@ void MainWindowPresenter::notifyNewBatchRequested() {
 }
 
 void MainWindowPresenter::notifyCloseBatchRequested(int batchIndex) {
+  if (m_batchPresenters[batchIndex]->isAutoreducing() ||
+      m_batchPresenters[batchIndex]->isProcessing()) {
+    m_messageHandler->giveUserCritical(
+        "Cannot close batch while processing or autoprocessing is in progress",
+        "Error");
+    return;
+  }
+
   if (m_batchPresenters[batchIndex]->requestClose()) {
     m_batchPresenters.erase(m_batchPresenters.begin() + batchIndex);
     m_view->removeBatch(batchIndex);

qt/scientific_interfaces/ISISReflectometry/GUI/MainWindow/MainWindowPresenter.h

@@ -17,6 +17,7 @@ namespace MantidQt {
 namespace CustomInterfaces {
 
 class IMainWindowView;
+class IMessageHandler;
 
 /** @class MainWindowPresenter
 
@@ -28,7 +29,7 @@ class MANTIDQT_ISISREFLECTOMETRY_DLL MainWindowPresenter
       public IMainWindowPresenter {
 public:
   /// Constructor
-  MainWindowPresenter(IMainWindowView *view,
+  MainWindowPresenter(IMainWindowView *view, IMessageHandler *messageHandler,
                       BatchPresenterFactory batchPresenterFactory);
 
   // IMainWindowPresenter overrides
@@ -47,6 +48,7 @@ private:
   void addNewBatch(IBatchView *batchView);
 
   IMainWindowView *m_view;
+  IMessageHandler *m_messageHandler;
   BatchPresenterFactory m_batchPresenterFactory;
   std::vector<std::shared_ptr<IBatchPresenter>> m_batchPresenters;
 };

qt/scientific_interfaces/ISISReflectometry/GUI/MainWindow/MainWindowView.cpp

@@ -91,14 +91,14 @@ void MainWindowView::initLayout() {
 
   // Create the presenter
   m_presenter = std::make_unique<MainWindowPresenter>(
-      this, std::move(makeBatchPresenter));
+      this, messageHandler, std::move(makeBatchPresenter));
 
   m_notifyee->notifyNewBatchRequested();
   m_notifyee->notifyNewBatchRequested();
 }
 
 void MainWindowView::onTabCloseRequested(int tabIndex) {
-  m_ui.mainTabs->removeTab(tabIndex);
+  m_notifyee->notifyCloseBatchRequested(tabIndex);
 }
 
 void MainWindowView::onNewBatchRequested(bool) {