LCS migration : replace warning by a QMessageBox.

src/App/Datums.cpp

@@ -292,13 +292,11 @@ void LocalCoordinateSystem::migrateOriginPoint()
 {
     auto features = OriginFeatures.getValues();
 
-    auto featIt = std::find_if(features.begin(), features.end(),
-        [](App::DocumentObject* obj) {
-        return obj->isDerivedFrom(App::DatumElement::getClassTypeId()) &&
+    auto isOrigin = [](App::DocumentObject* obj) {
+        return obj->isDerivedFrom<App::DatumElement>() &&
             strcmp(static_cast<App::DatumElement*>(obj)->Role.getValue(), PointRoles[0]) == 0;
-    });
-    if (featIt == features.end()) {
-        // origin point not found let's add it
+    };
+    if (std::none_of(features.begin(), features.end(), isOrigin)) {
         auto data = getData(PointRoles[0]);
         auto* origin = createDatum(data);
         features.push_back(origin);
@@ -310,7 +308,7 @@ void LocalCoordinateSystem::migrateXAxisPlacement()
 {
     auto features = OriginFeatures.getValues();
 
-    bool migrated = false;
+    migrated = false;
 
     const auto& setupData = getSetupData();
     for (auto* obj : features) {
@@ -326,16 +324,6 @@ void LocalCoordinateSystem::migrateXAxisPlacement()
             }
         }
     }
-
-    static bool warnedUser = false;
-    if (!warnedUser && migrated) {
-        Base::Console().Warning("This file was created with an older version of FreeCAD."
-            "It had some origin's X axis with incorrect placement, which is being fixed now.\n"
-            "But if you save the file here and open this file back in an "
-            "older version of FreeCAD, you will find the origin objects axis looking incorrect."
-            "And if your file is using the origin axis as references it will likely be broken.\n");
-        warnedUser = true;
-    }
 }
 
 // ----------------------------------------------------------------------------

src/App/Datums.h

@@ -205,6 +205,8 @@ public:
     // Axis links
     PropertyLinkList OriginFeatures;
 
+    bool migrated;
+
 protected:
     /// Checks integrity of the LCS
     App::DocumentObjectExecReturn* execute() override;

src/Gui/ViewProviderCoordinateSystem.cpp

@@ -26,6 +26,8 @@
 #ifndef _PreComp_
 # include <Inventor/nodes/SoLightModel.h>
 # include <Inventor/nodes/SoSeparator.h>
+# include <QMessageBox>
+# include <QCheckBox>
 #endif
 
 #include <App/Document.h>
@@ -83,6 +85,50 @@ void ViewProviderCoordinateSystem::attach(App::DocumentObject* pcObject)
     addDisplayMaskMode(pcGroupChildren, "Base");
 }
 
+void ViewProviderCoordinateSystem::finishRestoring()
+{
+    showMigrationDialog();
+}
+
+void ViewProviderCoordinateSystem::showMigrationDialog()
+{
+    auto lcs = dynamic_cast<App::LocalCoordinateSystem*>(getObject());
+    if (!lcs || !lcs->migrated) {
+        return;
+    }
+
+    static bool userWarned = false;
+
+    if (userWarned || !App::GetApplication().GetParameterGroupByPath(
+        "User parameter:BaseApp/Preferences/View")->GetBool("ShowLCSMigrationWarning", true)) {
+        return;
+    }
+
+    // Display the warning message
+    QMessageBox msgBox(QMessageBox::Warning,
+        QObject::tr("File Migration Warning"),
+        QObject::tr("This file was created with an older version of FreeCAD. "
+            "Origin axes had incorrect placements, which have now been corrected.\n\n"
+            "However, if you save this file in the current version and reopen it in an"
+            " older version of FreeCAD, the origin axes will be misaligned. Additionally, "
+            "if your file references these origin axes, your file will likely be broken."),
+        QMessageBox::Ok);
+
+    QCheckBox* checkBox = new QCheckBox(QObject::tr("Don't show this warning again"));
+    msgBox.setCheckBox(checkBox);
+
+    msgBox.exec();
+
+    // Update static flag if the user has seen the warning
+    userWarned = true;
+
+    // Save preference if the user selects "Don't show again"
+    if (checkBox->isChecked()) {
+        App::GetApplication().GetParameterGroupByPath(
+            "User parameter:BaseApp/Preferences/View")->SetBool("ShowLCSMigrationWarning", false);
+    }
+}
+
 std::vector<std::string> ViewProviderCoordinateSystem::getDisplayModes() const
 {
     return { "Base" };

src/Gui/ViewProviderCoordinateSystem.h

@@ -83,7 +83,11 @@ protected:
     void updateData(const App::Property*) override;
     bool onDelete(const std::vector<std::string> &) override;
 
+    void finishRestoring() override;
+
 private:
+    void showMigrationDialog();
+
     SoGroup *pcGroupChildren;
 
     std::map<Gui::ViewProvider*, bool> tempVisMap;