RFT file improvements

* Guard null pointer access
* Delay open of RFT files until data is requested
When opening ensemble summary cases, the opening of RFT files can take some time. Avoid this by delaying the file open operation.

* Fix infinite update loop for RFT plots
* Avoid moving the tracker line when clicking in the plot

ApplicationLibCode/FileInterface/RifReaderOpmRft.cpp

@@ -41,8 +41,9 @@
 RifReaderOpmRft::RifReaderOpmRft( const QString& fileName, const QString& dataDeckFileName )
     : m_segmentResultItemCount( 0 )
     , m_connectionResultItemCount( 0 )
+    , m_fileName( fileName )
+    , m_dataDeckFileName( dataDeckFileName )
 {
-    openFiles( fileName, dataDeckFileName );
 }
 
 //--------------------------------------------------------------------------------------------------
@@ -51,8 +52,8 @@ RifReaderOpmRft::RifReaderOpmRft( const QString& fileName, const QString& dataDe
 RifReaderOpmRft::RifReaderOpmRft( const QString& fileName )
     : m_segmentResultItemCount( 0 )
     , m_connectionResultItemCount( 0 )
+    , m_fileName( fileName )
 {
-    openFiles( fileName, "" );
 }
 
 //--------------------------------------------------------------------------------------------------
@@ -60,6 +61,8 @@ RifReaderOpmRft::RifReaderOpmRft( const QString& fileName )
 //--------------------------------------------------------------------------------------------------
 std::set<RifEclipseRftAddress> RifReaderOpmRft::eclipseRftAddresses()
 {
+    openFiles();
+
     return m_addresses;
 }
 
@@ -68,6 +71,8 @@ std::set<RifEclipseRftAddress> RifReaderOpmRft::eclipseRftAddresses()
 //--------------------------------------------------------------------------------------------------
 void RifReaderOpmRft::values( const RifEclipseRftAddress& rftAddress, std::vector<double>* values )
 {
+    openFiles();
+
     auto wellName   = rftAddress.wellName().toStdString();
     auto resultName = rftAddress.segmentResultName().toStdString();
 
@@ -182,6 +187,8 @@ void RifReaderOpmRft::values( const RifEclipseRftAddress& rftAddress, std::vecto
 //--------------------------------------------------------------------------------------------------
 std::set<QDateTime> RifReaderOpmRft::availableTimeSteps( const QString& wellName )
 {
+    openFiles();
+
     std::set<QDateTime> timeSteps;
 
     for ( const auto& address : m_addresses )
@@ -201,6 +208,8 @@ std::set<QDateTime>
     RifReaderOpmRft::availableTimeSteps( const QString&                                     wellName,
                                          const RifEclipseRftAddress::RftWellLogChannelType& wellLogChannelName )
 {
+    openFiles();
+
     if ( wellLogChannelName == RifEclipseRftAddress::RftWellLogChannelType::SEGMENT_VALUES )
         return m_rftSegmentTimeSteps;
 
@@ -223,6 +232,8 @@ std::set<QDateTime>
     RifReaderOpmRft::availableTimeSteps( const QString&                                               wellName,
                                          const std::set<RifEclipseRftAddress::RftWellLogChannelType>& relevantChannels )
 {
+    openFiles();
+
     std::set<QDateTime> timeSteps;
 
     for ( const auto& address : m_addresses )
@@ -240,6 +251,8 @@ std::set<QDateTime>
 //--------------------------------------------------------------------------------------------------
 std::set<RifEclipseRftAddress::RftWellLogChannelType> RifReaderOpmRft::availableWellLogChannels( const QString& wellName )
 {
+    openFiles();
+
     std::set<RifEclipseRftAddress::RftWellLogChannelType> types;
 
     for ( const auto& a : m_addresses )
@@ -258,6 +271,8 @@ std::set<RifEclipseRftAddress::RftWellLogChannelType> RifReaderOpmRft::available
 //--------------------------------------------------------------------------------------------------
 std::set<QString> RifReaderOpmRft::wellNames()
 {
+    openFiles();
+
     return m_wellNames;
 }
 
@@ -266,6 +281,8 @@ std::set<QString> RifReaderOpmRft::wellNames()
 //--------------------------------------------------------------------------------------------------
 void RifReaderOpmRft::cellIndices( const RifEclipseRftAddress& rftAddress, std::vector<caf::VecIjk>* indices )
 {
+    openFiles();
+
     auto wellName = rftAddress.wellName().toStdString();
 
     auto date = rftAddress.timeStep().date();
@@ -324,6 +341,8 @@ std::map<int, int> RifReaderOpmRft::branchIdsAndOneBasedIndices( const QString&
 //--------------------------------------------------------------------------------------------------
 RifRftSegment RifReaderOpmRft::segmentForWell( const QString& wellName, const QDateTime& timeStep )
 {
+    openFiles();
+
     int y = timeStep.date().year();
     int m = timeStep.date().month();
     int d = timeStep.date().day();
@@ -975,3 +994,16 @@ std::vector<float>
 
     return {};
 }
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RifReaderOpmRft::openFiles()
+{
+    // The file open operations can be costly, so do lazy loading of the files
+    // NB! Make sure that this function is called from all public functions that needs to access the files
+
+    if ( isOpen() ) return;
+
+    openFiles( m_fileName, m_dataDeckFileName );
+}