Transfer in LS3 code

src/App/Document.cpp

@@ -1475,6 +1475,7 @@ Document::readObjects(Base::XMLReader& reader)
 
 void Document::addRecomputeObject(DocumentObject *obj) {
     if(testStatus(Status::Restoring) && obj) {
+        setStatus(Status::RecomputeOnRestore, true);
         d->touchedObjs.insert(obj);
         obj->touch();
     }

src/App/Document.h

@@ -77,6 +77,7 @@ public:
         RestoreError = 10,
         LinkStampChanged = 11, // Indicates during restore time if any linked document's time stamp has changed
         IgnoreErrorOnRecompute = 12, // Don't report errors if the recompute failed
+        RecomputeOnRestore = 13, // Mark pending recompute on restore for migration purpose
     };
 
     /** @name Properties */

src/Gui/Application.cpp

@@ -379,6 +379,40 @@ Application::Application(bool GUIenabled)
         App::GetApplication().signalShowHidden.connect(
             std::bind(&Gui::Application::slotShowHidden, this, sp::_1));
         // NOLINTEND
+        App::GetApplication().signalFinishOpenDocument.connect([]() {
+            std::vector<App::Document*> docs;
+            for(auto doc : App::GetApplication().getDocuments()) {
+                if(doc->testStatus(App::Document::RecomputeOnRestore)) {
+                    docs.push_back(doc);
+                    doc->setStatus(App::Document::RecomputeOnRestore, false);
+                }
+            }
+            if(docs.empty() || !App::DocumentParams::getWarnRecomputeOnRestore())
+                return;
+            WaitCursor wc;
+            wc.restoreCursor();
+            auto res = QMessageBox::warning(getMainWindow(), QObject::tr("Recompution required"),
+                QObject::tr("Some document(s) require recomputation for migration purpose. "
+                            "It is highly recommended to perform a recomputation before "
+                            "any modification to avoid compatibility problem.\n\n"
+                            "Do you want to recompute now?"),
+                QMessageBox::Yes|QMessageBox::No, QMessageBox::Yes);
+            if(res != QMessageBox::Yes)
+                return;
+            bool hasError = false;
+            for(auto doc : App::Document::getDependentDocuments(docs,true)) {
+                try {
+                    doc->recompute({},false,&hasError);
+                } catch (Base::Exception &e) {
+                    e.ReportException();
+                    hasError = true;
+                }
+            }
+            if(hasError)
+                QMessageBox::critical(getMainWindow(), QObject::tr("Recompute error"),
+                        QObject::tr("Failed to recompute some document(s).\n"
+                                    "Please check report view for more details."));
+        });
 
         // install the last active language
         ParameterGrp::handle hPGrp = App::GetApplication().GetUserParameter().GetGroup("BaseApp");