Regression Test: Make sure the grid is opened when reading time steps

No grid case curves was seen for  ProjectFilesSmallTests\TestCase_RFT_PLT\RegressionTest.rsp

ApplicationLibCode/ProjectDataModel/Flow/RimWellPlotTools.cpp

@@ -579,6 +579,12 @@ std::vector<RimPressureDepthData*> pressureDepthData()
 //--------------------------------------------------------------------------------------------------
 std::map<QDateTime, std::set<RifDataSourceForRftPlt>> timeStepsMapFromGridCase( RimEclipseCase* gridCase )
 {
+    if ( !gridCase ) return {};
+
+    // Make sure the grid model is opened. This is required to read out time step dates. If no 3D views are present, the grid model is not
+    // yet opened.
+    gridCase->openEclipseGridFile();
+
     const RigEclipseCaseData* const             eclipseCaseData = gridCase->eclipseCaseData();
     std::pair<RigEclipseResultAddress, QString> resultDataInfo  = pressureResultDataInfo( eclipseCaseData );
 

ApplicationLibCode/ProjectDataModel/Flow/RimWellRftPlot.cpp

@@ -1194,6 +1194,20 @@ std::map<QString, QStringList> RimWellRftPlot::findWellSources()
 //--------------------------------------------------------------------------------------------------
 void RimWellRftPlot::onLoadDataAndUpdate()
 {
+    if ( !m_isInitialized )
+    {
+        // TODO: m_selectedSources and m_selectedTimeSteps are not stored in the project file, so we need to set them here
+        // to ensure that the plot is initialized with the correct sources and time steps. Refactor m_selectedSources and
+        // m_selectedTimeSteps to be stored in the project file, and disable storing of curves to the project file. This is a temporary
+        // solution to ensure that the plot is initialized correctly setSelectedSourcesFromCurves();
+        //
+        // This function call was previously in initAfterRead, and triggered opening of the grid model. Moved here to allow 3D views to
+        // trigger open of grid model
+
+        setSelectedSourcesFromCurves();
+        m_isInitialized = true;
+    }
+
     if ( m_isOnLoad )
     {
         if ( plotCount() > 0 )
@@ -1246,12 +1260,6 @@ void RimWellRftPlot::initAfterRead()
         m_wellLogPlot_OBSOLETE = nullptr;
     }
 
-    // TODO: m_selectedSources and m_selectedTimeSteps are not stored in the project file, so we need to set them here
-    // to ensure that the plot is initialized with the correct sources and time steps. Refactor m_selectedSources and m_selectedTimeSteps to
-    // be stored in the project file, and disable storing of curves to the project file. This is a temporary solution to ensure that the
-    // plot is initialized correctly
-    setSelectedSourcesFromCurves();
-
     RimWellLogPlot::initAfterRead();
 }
 

ApplicationLibCode/ProjectDataModel/Flow/RimWellRftPlot.h

@@ -169,4 +169,5 @@ private:
     bool                                                     m_isOnLoad;
 
     caf::PdmChildField<RimWellLogPlot*> m_wellLogPlot_OBSOLETE;
+    bool                                m_isInitialized = false;
 };