Merge pull request #30 from dpaulat/feature/garbage-collect

Feature/garbage collect

scwx-qt/source/scwx/qt/main/main_window.cpp

@@ -357,6 +357,11 @@ void MainWindow::on_actionImGuiDebug_triggered()
    p->imGuiDebugDialog_->show();
 }
 
+void MainWindow::on_actionDumpRadarProductRecords_triggered()
+{
+   manager::RadarProductManager::DumpRecords();
+}
+
 void MainWindow::on_actionUserManual_triggered()
 {
    QDesktopServices::openUrl(QUrl {"https://supercell-wx.readthedocs.io/"});
@@ -392,6 +397,67 @@ void MainWindow::on_resourceTreeExpandAllButton_clicked()
    ui->resourceTreeView->expandAll();
 }
 
+void MainWindow::on_resourceTreeView_doubleClicked(const QModelIndex& index)
+{
+   std::string selectedString {index.data().toString().toStdString()};
+   std::chrono::system_clock::time_point time {};
+
+   logger_->debug("Selecting resource: {}",
+                  index.data().toString().toStdString());
+
+   static const std::string timeFormat {"%Y-%m-%d %H:%M:%S"};
+
+   std::istringstream in {selectedString};
+   in >> std::chrono::parse(timeFormat, time);
+
+   if (in.fail())
+   {
+      // Not a time string, ignore double-click
+      return;
+   }
+
+   QModelIndex parent1 = index.parent();
+   QModelIndex parent2 = parent1.parent();
+   QModelIndex parent3 = parent2.parent();
+
+   std::string radarSite {};
+   std::string groupName {};
+   std::string product {};
+
+   if (!parent2.isValid())
+   {
+      // A time entry should be at the third or fourth level
+      logger_->error("Unexpected resource data");
+      return;
+   }
+
+   if (parent3.isValid())
+   {
+      // Level 3 Product
+      radarSite = parent3.data().toString().toStdString();
+      groupName = parent2.data().toString().toStdString();
+      product   = parent1.data().toString().toStdString();
+   }
+   else
+   {
+      // Level 2 Product
+      radarSite = parent2.data().toString().toStdString();
+      groupName = parent1.data().toString().toStdString();
+      // No product index
+   }
+
+   common::RadarProductGroup group = common::GetRadarProductGroup(groupName);
+
+   // Update radar site if different from currently selected
+   if (p->activeMap_->GetRadarSite()->id() != radarSite)
+   {
+      p->activeMap_->SelectRadarSite(radarSite);
+   }
+
+   // Select the updated radar product
+   p->activeMap_->SelectRadarProduct(group, product, 0, time);
+}
+
 void MainWindowImpl::ConfigureMapLayout()
 {
    auto& generalSettings = manager::SettingsManager::general_settings();

scwx-qt/source/scwx/qt/main/main_window.hpp

@@ -37,6 +37,7 @@ private slots:
    void on_actionSettings_triggered();
    void on_actionExit_triggered();
    void on_actionImGuiDebug_triggered();
+   void on_actionDumpRadarProductRecords_triggered();
    void on_actionUserManual_triggered();
    void on_actionDiscord_triggered();
    void on_actionGitHubRepository_triggered();
@@ -44,6 +45,7 @@ private slots:
    void on_radarSiteSelectButton_clicked();
    void on_resourceTreeCollapseAllButton_clicked();
    void on_resourceTreeExpandAllButton_clicked();
+   void on_resourceTreeView_doubleClicked(const QModelIndex& index);
 
 private:
    std::unique_ptr<MainWindowImpl> p;

scwx-qt/source/scwx/qt/main/main_window.ui

@@ -83,6 +83,8 @@
      <string>&amp;Debug</string>
     </property>
     <addaction name="actionImGuiDebug"/>
+    <addaction name="separator"/>
+    <addaction name="actionDumpRadarProductRecords"/>
    </widget>
    <addaction name="menuFile"/>
    <addaction name="menuView"/>
@@ -397,6 +399,11 @@
     <string>&amp;GitHub Repository</string>
    </property>
   </action>
+  <action name="actionDumpRadarProductRecords">
+   <property name="text">
+    <string>Dump Radar &amp;Product Records</string>
+   </property>
+  </action>
  </widget>
  <resources>
   <include location="../../../../scwx-qt.qrc"/>

scwx-qt/source/scwx/qt/manager/radar_product_manager.cpp

@@ -16,6 +16,7 @@
 
 #pragma warning(push, 0)
 #include <boost/asio/steady_timer.hpp>
+#include <boost/container_hash/hash.hpp>
 #include <boost/range/irange.hpp>
 #include <boost/timer/timer.hpp>
 #include <fmt/chrono.h>
@@ -36,8 +37,10 @@ static const auto logger_ = scwx::util::Logger::Create(logPrefix_);
 typedef std::function<std::shared_ptr<wsr88d::NexradFile>()>
    CreateNexradFileFunction;
 typedef std::map<std::chrono::system_clock::time_point,
-                 std::shared_ptr<types::RadarProductRecord>>
+                 std::weak_ptr<types::RadarProductRecord>>
    RadarProductRecordMap;
+typedef std::list<std::shared_ptr<types::RadarProductRecord>>
+   RadarProductRecordList;
 
 static constexpr uint32_t NUM_RADIAL_GATES_0_5_DEGREE =
    common::MAX_0_5_DEGREE_RADIALS * common::MAX_DATA_MOMENT_GATES;
@@ -54,7 +57,7 @@ static constexpr std::chrono::seconds kRetryInterval_ {15};
 
 static std::unordered_map<std::string, std::weak_ptr<RadarProductManager>>
                          instanceMap_;
-static std::mutex instanceMutex_;
+static std::shared_mutex instanceMutex_;
 
 static std::unordered_map<std::string,
                           std::shared_ptr<types::RadarProductRecord>>
@@ -123,7 +126,9 @@ public:
        coordinates0_5Degree_ {},
        coordinates1Degree_ {},
        level2ProductRecords_ {},
+       level2ProductRecentRecords_ {},
        level3ProductRecordsMap_ {},
+       level3ProductRecentRecordsMap_ {},
        level2ProductRecordMutex_ {},
        level3ProductRecordMutex_ {},
        level2ProviderManager_ {std::make_shared<ProviderManager>(
@@ -159,6 +164,10 @@ public:
                        auto& [key, providerManager] = p;
                        providerManager->Disable();
                     });
+
+      // Lock other mutexes before destroying, ensure loading is complete
+      std::unique_lock loadLevel2DataLock {loadLevel2DataMutex_};
+      std::unique_lock loadLevel3DataLock {loadLevel3DataMutex_};
    }
 
    RadarProductManager* self_;
@@ -166,17 +175,22 @@ public:
    std::shared_ptr<ProviderManager>
    GetLevel3ProviderManager(const std::string& product);
 
-   void EnableRefresh(std::shared_ptr<ProviderManager> providerManager,
+   void EnableRefresh(boost::uuids::uuid               uuid,
+                      std::shared_ptr<ProviderManager> providerManager,
                       bool                             enabled);
    void RefreshData(std::shared_ptr<ProviderManager> providerManager);
 
-   std::shared_ptr<types::RadarProductRecord>
+   std::tuple<std::shared_ptr<types::RadarProductRecord>,
+              std::chrono::system_clock::time_point>
    GetLevel2ProductRecord(std::chrono::system_clock::time_point time);
-   std::shared_ptr<types::RadarProductRecord>
+   std::tuple<std::shared_ptr<types::RadarProductRecord>,
+              std::chrono::system_clock::time_point>
    GetLevel3ProductRecord(const std::string&                    product,
                           std::chrono::system_clock::time_point time);
    std::shared_ptr<types::RadarProductRecord>
    StoreRadarProductRecord(std::shared_ptr<types::RadarProductRecord> record);
+   void UpdateRecentRecords(RadarProductRecordList& recentList,
+                            std::shared_ptr<types::RadarProductRecord> record);
 
    void LoadProviderData(std::chrono::system_clock::time_point time,
                          std::shared_ptr<ProviderManager>      providerManager,
@@ -200,9 +214,11 @@ public:
    std::vector<float> coordinates1Degree_;
 
    RadarProductRecordMap  level2ProductRecords_;
+   RadarProductRecordList level2ProductRecentRecords_;
    std::unordered_map<std::string, RadarProductRecordMap>
       level3ProductRecordsMap_;
-
+   std::unordered_map<std::string, RadarProductRecordList>
+                     level3ProductRecentRecordsMap_;
    std::shared_mutex level2ProductRecordMutex_;
    std::shared_mutex level3ProductRecordMutex_;
 
@@ -218,6 +234,12 @@ public:
 
    common::Level3ProductCategoryMap availableCategoryMap_;
    std::shared_mutex                availableCategoryMutex_;
+
+   std::unordered_map<boost::uuids::uuid,
+                      std::shared_ptr<ProviderManager>,
+                      boost::hash<boost::uuids::uuid>>
+              refreshMap_ {};
+   std::mutex refreshMapMutex_ {};
 };
 
 RadarProductManager::RadarProductManager(const std::string& radarId) :
@@ -248,6 +270,8 @@ std::string ProviderManager::name() const
 
 void ProviderManager::Disable()
 {
+   logger_->debug("Disabling refresh: {}", name());
+
    std::unique_lock lock(refreshTimerMutex_);
    refreshEnabled_ = false;
    refreshTimer_.cancel();
@@ -266,6 +290,61 @@ void RadarProductManager::Cleanup()
    }
 }
 
+void RadarProductManager::DumpRecords()
+{
+   scwx::util::async(
+      []
+      {
+         logger_->info("Record Dump");
+
+         std::shared_lock instanceLock {instanceMutex_};
+         for (auto& instance : instanceMap_)
+         {
+            auto radarProductManager = instance.second.lock();
+            if (radarProductManager != nullptr)
+            {
+               logger_->info(" {}", radarProductManager->radar_site()->id());
+               logger_->info("  Level 2");
+
+               {
+                  std::shared_lock level2ProductLock {
+                     radarProductManager->p->level2ProductRecordMutex_};
+
+                  for (auto& record :
+                       radarProductManager->p->level2ProductRecords_)
+                  {
+                     logger_->info("   {}{}",
+                                   scwx::util::TimeString(record.first),
+                                   record.second.expired() ? " (expired)" : "");
+                  }
+               }
+
+               logger_->info("  Level 3");
+
+               {
+                  std::shared_lock level3ProductLock {
+                     radarProductManager->p->level3ProductRecordMutex_};
+
+                  for (auto& recordMap :
+                       radarProductManager->p->level3ProductRecordsMap_)
+                  {
+                     // Product Name
+                     logger_->info("   {}", recordMap.first);
+
+                     for (auto& record : recordMap.second)
+                     {
+                        logger_->info("    {}{}",
+                                      scwx::util::TimeString(record.first),
+                                      record.second.expired() ? " (expired)" :
+                                                                "");
+                     }
+                  }
+               }
+            }
+         }
+      });
+}
+
 const std::vector<float>&
 RadarProductManager::coordinates(common::RadialSize radialSize) const
 {
@@ -413,11 +492,12 @@ RadarProductManagerImpl::GetLevel3ProviderManager(const std::string& product)
 
 void RadarProductManager::EnableRefresh(common::RadarProductGroup group,
                                         const std::string&        product,
-                                        bool                      enabled)
+                                        bool                      enabled,
+                                        boost::uuids::uuid        uuid)
 {
    if (group == common::RadarProductGroup::Level2)
    {
-      p->EnableRefresh(p->level2ProviderManager_, enabled);
+      p->EnableRefresh(uuid, p->level2ProviderManager_, enabled);
    }
    else
    {
@@ -437,16 +517,65 @@ void RadarProductManager::EnableRefresh(common::RadarProductGroup group,
                           availableProducts.cend(),
                           product) != availableProducts.cend())
             {
-               p->EnableRefresh(providerManager, enabled);
+               p->EnableRefresh(uuid, providerManager, enabled);
             }
          });
    }
 }
 
 void RadarProductManagerImpl::EnableRefresh(
-   std::shared_ptr<ProviderManager> providerManager, bool enabled)
+   boost::uuids::uuid               uuid,
+   std::shared_ptr<ProviderManager> providerManager,
+   bool                             enabled)
 {
-   if (providerManager->refreshEnabled_ != enabled)
+   // Lock the refresh map
+   std::unique_lock lock {refreshMapMutex_};
+
+   auto currentProviderManager = refreshMap_.find(uuid);
+   if (currentProviderManager != refreshMap_.cend())
+   {
+      // If the enabling refresh for a different product, or disabling refresh
+      if (currentProviderManager->second != providerManager || !enabled)
+      {
+         // Determine number of entries in the map for the current provider
+         // manager
+         auto currentProviderManagerCount = std::count_if(
+            refreshMap_.cbegin(),
+            refreshMap_.cend(),
+            [&](const auto& provider)
+            { return provider.second == currentProviderManager->second; });
+
+         // If this is the last reference to the provider in the refresh map
+         if (currentProviderManagerCount == 1)
+         {
+            // Disable current provider
+            currentProviderManager->second->Disable();
+         }
+
+         // Dissociate uuid from current provider manager
+         refreshMap_.erase(currentProviderManager);
+
+         // If we are enabling a new provider manager
+         if (enabled)
+         {
+            // Associate uuid to providerManager
+            refreshMap_.emplace(uuid, providerManager);
+         }
+      }
+   }
+   else if (enabled)
+   {
+      // We are enabling a new provider manager
+      // Associate uuid to provider manager
+      refreshMap_.emplace(uuid, providerManager);
+   }
+
+   // Release the refresh map mutex
+   lock.unlock();
+
+   // We have already handled a disable request by this point. If enabling, and
+   // the provider manager refresh isn't already enabled, enable it.
+   if (enabled && providerManager->refreshEnabled_ != enabled)
    {
       providerManager->refreshEnabled_ = enabled;
 
@@ -475,7 +604,7 @@ void RadarProductManagerImpl::RefreshData(
 
          std::chrono::milliseconds interval = kRetryInterval_;
 
-         if (newObjects > 0)
+         if (totalObjects > 0)
          {
             std::string key = providerManager->provider_->FindLatestKey();
             auto        latestTime =
@@ -491,10 +620,14 @@ void RadarProductManagerImpl::RefreshData(
                interval = kRetryInterval_;
             }
 
-            emit providerManager->NewDataAvailable(
+            if (newObjects > 0)
-               providerManager->group_, providerManager->product_, latestTime);
+            {
+               emit providerManager->NewDataAvailable(providerManager->group_,
+                                                      providerManager->product_,
+                                                      latestTime);
             }
-         else if (providerManager->refreshEnabled_ && totalObjects == 0)
+         }
+         else if (providerManager->refreshEnabled_)
          {
             logger_->info("[{}] No data found, disabling refresh",
                           providerManager->name());
@@ -561,11 +694,14 @@ void RadarProductManagerImpl::LoadProviderData(
 
             auto it = recordMap.find(time);
             if (it != recordMap.cend())
+            {
+               existingRecord = it->second.lock();
+
+               if (existingRecord != nullptr)
                {
                   logger_->debug(
                      "Data previously loaded, loading from data cache");
-
+               }
-               existingRecord = it->second;
             }
          }
 
@@ -727,38 +863,70 @@ void RadarProductManagerImpl::LoadNexradFile(
       });
 }
 
-std::shared_ptr<types::RadarProductRecord>
+std::tuple<std::shared_ptr<types::RadarProductRecord>,
+           std::chrono::system_clock::time_point>
 RadarProductManagerImpl::GetLevel2ProductRecord(
    std::chrono::system_clock::time_point time)
 {
-   std::shared_ptr<types::RadarProductRecord> record;
+   std::shared_ptr<types::RadarProductRecord> record {nullptr};
+   RadarProductRecordMap::const_pointer       recordPtr {nullptr};
+   std::chrono::system_clock::time_point      recordTime {time};
 
    if (!level2ProductRecords_.empty() &&
        time == std::chrono::system_clock::time_point {})
    {
       // If a default-initialized time point is given, return the latest record
-      record = level2ProductRecords_.rbegin()->second;
+      recordPtr = &(*level2ProductRecords_.rbegin());
    }
    else
    {
-      // TODO: Round to minutes
+      recordPtr =
-      record = scwx::util::GetBoundedElementValue(level2ProductRecords_, time);
+         scwx::util::GetBoundedElementPointer(level2ProductRecords_, time);
+   }
 
-      // Does the record contain the time we are looking for?
+   if (recordPtr != nullptr)
-      if (record != nullptr && (time < record->level2_file()->start_time()))
    {
-         record = nullptr;
+      if (time == std::chrono::system_clock::time_point {} ||
+          time == recordPtr->first)
+      {
+         recordTime = recordPtr->first;
+         record     = recordPtr->second.lock();
       }
    }
 
-   return record;
+   if (record == nullptr &&
+       recordTime != std::chrono::system_clock::time_point {})
+   {
+      // Product is expired, reload it
+      std::shared_ptr<request::NexradFileRequest> request =
+         std::make_shared<request::NexradFileRequest>();
+
+      QObject::connect(
+         request.get(),
+         &request::NexradFileRequest::RequestComplete,
+         self_,
+         [this](std::shared_ptr<request::NexradFileRequest> request)
+         {
+            if (request->radar_product_record() != nullptr)
+            {
+               emit self_->DataReloaded(request->radar_product_record());
+            }
+         });
+
+      self_->LoadLevel2Data(recordTime, request);
+   }
+
+   return {record, recordTime};
 }
 
-std::shared_ptr<types::RadarProductRecord>
+std::tuple<std::shared_ptr<types::RadarProductRecord>,
+           std::chrono::system_clock::time_point>
 RadarProductManagerImpl::GetLevel3ProductRecord(
    const std::string& product, std::chrono::system_clock::time_point time)
 {
-   std::shared_ptr<types::RadarProductRecord> record = nullptr;
+   std::shared_ptr<types::RadarProductRecord> record {nullptr};
+   RadarProductRecordMap::const_pointer       recordPtr {nullptr};
+   std::chrono::system_clock::time_point      recordTime {time};
 
    std::unique_lock lock {level3ProductRecordMutex_};
 
@@ -770,15 +938,50 @@ RadarProductManagerImpl::GetLevel3ProductRecord(
       {
          // If a default-initialized time point is given, return the latest
          // record
-         record = it->second.rbegin()->second;
+         recordPtr = &(*it->second.rbegin());
       }
       else
       {
-         record = scwx::util::GetBoundedElementValue(it->second, time);
+         recordPtr = scwx::util::GetBoundedElementPointer(it->second, time);
       }
    }
 
-   return record;
+   // Lock is no longer needed
+   lock.unlock();
+
+   if (recordPtr != nullptr)
+   {
+      if (time == std::chrono::system_clock::time_point {} ||
+          time == recordPtr->first)
+      {
+         recordTime = recordPtr->first;
+         record     = recordPtr->second.lock();
+      }
+   }
+
+   if (record == nullptr &&
+       recordTime != std::chrono::system_clock::time_point {})
+   {
+      // Product is expired, reload it
+      std::shared_ptr<request::NexradFileRequest> request =
+         std::make_shared<request::NexradFileRequest>();
+
+      QObject::connect(
+         request.get(),
+         &request::NexradFileRequest::RequestComplete,
+         self_,
+         [this](std::shared_ptr<request::NexradFileRequest> request)
+         {
+            if (request->radar_product_record() != nullptr)
+            {
+               emit self_->DataReloaded(request->radar_product_record());
+            }
+         });
+
+      self_->LoadLevel3Data(product, recordTime, request);
+   }
+
+   return {record, recordTime};
 }
 
 std::shared_ptr<types::RadarProductRecord>
@@ -787,7 +990,7 @@ RadarProductManagerImpl::StoreRadarProductRecord(
 {
    logger_->debug("StoreRadarProductRecord()");
 
-   std::shared_ptr<types::RadarProductRecord> storedRecord = record;
+   std::shared_ptr<types::RadarProductRecord> storedRecord = nullptr;
 
    auto timeInSeconds =
       std::chrono::time_point_cast<std::chrono::seconds,
@@ -799,16 +1002,23 @@ RadarProductManagerImpl::StoreRadarProductRecord(
 
       auto it = level2ProductRecords_.find(timeInSeconds);
       if (it != level2ProductRecords_.cend())
+      {
+         storedRecord = it->second.lock();
+
+         if (storedRecord != nullptr)
          {
             logger_->debug(
                "Level 2 product previously loaded, loading from cache");
-
-         storedRecord = it->second;
          }
-      else
+      }
+
+      if (storedRecord == nullptr)
       {
+         storedRecord                         = record;
          level2ProductRecords_[timeInSeconds] = record;
       }
+
+      UpdateRecentRecords(level2ProductRecentRecords_, storedRecord);
    }
    else if (record->radar_product_group() == common::RadarProductGroup::Level3)
    {
@@ -818,24 +1028,59 @@ RadarProductManagerImpl::StoreRadarProductRecord(
 
       auto it = productMap.find(timeInSeconds);
       if (it != productMap.cend())
+      {
+         storedRecord = it->second.lock();
+
+         if (storedRecord != nullptr)
          {
             logger_->debug(
                "Level 3 product previously loaded, loading from cache");
-
-         storedRecord = it->second;
          }
-      else
+      }
+
+      if (storedRecord == nullptr)
       {
+         storedRecord              = record;
          productMap[timeInSeconds] = record;
       }
+
+      UpdateRecentRecords(
+         level3ProductRecentRecordsMap_[record->radar_product()], storedRecord);
    }
 
    return storedRecord;
 }
 
+void RadarProductManagerImpl::UpdateRecentRecords(
+   RadarProductRecordList&                    recentList,
+   std::shared_ptr<types::RadarProductRecord> record)
+{
+   static constexpr std::size_t kRecentListMaxSize_ {2u};
+
+   auto it = std::find(recentList.cbegin(), recentList.cend(), record);
+   if (it != recentList.cbegin() && it != recentList.cend())
+   {
+      // If the record exists beyond the front of the list, remove it
+      recentList.erase(it);
+   }
+
+   if (recentList.size() == 0 || it != recentList.cbegin())
+   {
+      // Add the record to the front of the list, unless it's already there
+      recentList.push_front(record);
+   }
+
+   while (recentList.size() > kRecentListMaxSize_)
+   {
+      // Remove from the end of the list while it's too big
+      recentList.pop_back();
+   }
+}
+
 std::tuple<std::shared_ptr<wsr88d::rda::ElevationScan>,
            float,
-           std::vector<float>>
+           std::vector<float>,
+           std::chrono::system_clock::time_point>
 RadarProductManager::GetLevel2Data(wsr88d::rda::DataBlockType dataBlockType,
                                    float                      elevation,
                                    std::chrono::system_clock::time_point time)
@@ -844,8 +1089,8 @@ RadarProductManager::GetLevel2Data(wsr88d::rda::DataBlockType dataBlockType,
    float                                       elevationCut = 0.0f;
    std::vector<float>                          elevationCuts;
 
-   std::shared_ptr<types::RadarProductRecord> record =
+   std::shared_ptr<types::RadarProductRecord> record;
-      p->GetLevel2ProductRecord(time);
+   std::tie(record, time) = p->GetLevel2ProductRecord(time);
 
    if (record != nullptr)
    {
@@ -854,24 +1099,25 @@ RadarProductManager::GetLevel2Data(wsr88d::rda::DataBlockType dataBlockType,
             dataBlockType, elevation, time);
    }
 
-   return std::tie(radarData, elevationCut, elevationCuts);
+   return {radarData, elevationCut, elevationCuts, time};
 }
 
-std::shared_ptr<wsr88d::rpg::Level3Message>
+std::tuple<std::shared_ptr<wsr88d::rpg::Level3Message>,
+           std::chrono::system_clock::time_point>
 RadarProductManager::GetLevel3Data(const std::string& product,
                                    std::chrono::system_clock::time_point time)
 {
    std::shared_ptr<wsr88d::rpg::Level3Message> message = nullptr;
 
-   std::shared_ptr<types::RadarProductRecord> record =
+   std::shared_ptr<types::RadarProductRecord> record;
-      p->GetLevel3ProductRecord(product, time);
+   std::tie(record, time) = p->GetLevel3ProductRecord(product, time);
 
    if (record != nullptr)
    {
       message = record->level3_file()->message();
    }
 
-   return message;
+   return {message, time};
 }
 
 common::Level3ProductCategoryMap
@@ -970,7 +1216,7 @@ RadarProductManager::Instance(const std::string& radarSite)
    bool                                 instanceCreated = false;
 
    {
-      std::lock_guard<std::mutex> guard(instanceMutex_);
+      std::unique_lock lock {instanceMutex_};
 
       // Look up instance weak pointer
       auto it = instanceMap_.find(radarSite);

scwx-qt/source/scwx/qt/manager/radar_product_manager.hpp

@@ -12,6 +12,7 @@
 #include <unordered_map>
 #include <vector>
 
+#include <boost/uuid/nil_generator.hpp>
 #include <QObject>
 
 namespace scwx
@@ -33,23 +34,63 @@ public:
 
    static void Cleanup();
 
+   /**
+    * @brief Debug function to dump currently loaded products to the log.
+    */
+   static void DumpRecords();
+
    const std::vector<float>& coordinates(common::RadialSize radialSize) const;
    float                     gate_size() const;
    std::shared_ptr<config::RadarSite> radar_site() const;
 
    void Initialize();
+
+   /**
+    * @brief Enables or disables refresh associated with a unique identifier
+    * (UUID) for a given radar product group and product.
+    *
+    * Only a single product refresh can be enabled for a given UUID. If a second
+    * product refresh is enabled for the same UUID, the first product refresh is
+    * disabled (unless still enabled under a different UUID).
+    *
+    * @param [in] group Radar product group
+    * @param [in] product Radar product name
+    * @param [in] enabled Whether to enable refresh
+    * @param [in] uuid Unique identifier. Default is boost::uuids::nil_uuid().
+    */
    void EnableRefresh(common::RadarProductGroup group,
                       const std::string&        product,
-                      bool                      enabled);
+                      bool                      enabled,
+                      boost::uuids::uuid uuid = boost::uuids::nil_uuid());
 
+   /**
+    * @brief Get level 2 radar data for a data block type, elevation, and time.
+    *
+    * @param [in] dataBlockType Data block type
+    * @param [in] elevation Elevation tilt
+    * @param [in] time Radar product time
+    *
+    * @return Level 2 radar data, selected elevation cut, available elevation
+    * cuts and selected time
+    */
    std::tuple<std::shared_ptr<wsr88d::rda::ElevationScan>,
               float,
-              std::vector<float>>
+              std::vector<float>,
+              std::chrono::system_clock::time_point>
    GetLevel2Data(wsr88d::rda::DataBlockType            dataBlockType,
                  float                                 elevation,
                  std::chrono::system_clock::time_point time = {});
 
-   std::shared_ptr<wsr88d::rpg::Level3Message>
+   /**
+    * @brief Get level 3 message data for a product and time.
+    *
+    * @param [in] product Radar product name
+    * @param [in] time Radar product time
+    *
+    * @return Level 3 message data and selected time
+    */
+   std::tuple<std::shared_ptr<wsr88d::rpg::Level3Message>,
+              std::chrono::system_clock::time_point>
    GetLevel3Data(const std::string&                    product,
                  std::chrono::system_clock::time_point time = {});
 
@@ -76,6 +117,7 @@ public:
    void                             UpdateAvailableProducts();
 
 signals:
+   void DataReloaded(std::shared_ptr<types::RadarProductRecord> record);
    void Level3ProductsChanged();
    void NewDataAvailable(common::RadarProductGroup             group,
                          const std::string&                    product,

scwx-qt/source/scwx/qt/map/map_widget.cpp

@@ -17,6 +17,7 @@
 
 #include <backends/imgui_impl_opengl3.h>
 #include <backends/imgui_impl_qt.hpp>
+#include <boost/uuid/random_generator.hpp>
 #include <imgui.h>
 #include <QApplication>
 #include <QColor>
@@ -58,6 +59,7 @@ class MapWidgetImpl : public QObject
 public:
    explicit MapWidgetImpl(MapWidget*                   widget,
                           const QMapLibreGL::Settings& settings) :
+       uuid_ {boost::uuids::random_generator()()},
        context_ {std::make_shared<MapContext>()},
        widget_ {widget},
        settings_(settings),
@@ -126,6 +128,8 @@ public:
    common::Level2Product
    GetLevel2ProductOrDefault(const std::string& productName) const;
 
+   boost::uuids::uuid uuid_;
+
    std::shared_ptr<MapContext> context_;
 
    MapWidget*                        widget_;
@@ -303,7 +307,7 @@ std::shared_ptr<config::RadarSite> MapWidget::GetRadarSite() const
    return radarSite;
 }
 
-uint16_t MapWidget::GetVcp() const
+std::uint16_t MapWidget::GetVcp() const
 {
    auto radarProductView = p->context_->radar_product_view();
 
@@ -313,7 +317,7 @@ uint16_t MapWidget::GetVcp() const
    }
    else
    {
-      return 0;
+      return 0u;
    }
 }
 
@@ -330,7 +334,8 @@ void MapWidget::SelectElevation(float elevation)
 
 void MapWidget::SelectRadarProduct(common::RadarProductGroup group,
                                    const std::string&        product,
-                                   int16_t                   productCode)
+                                   std::int16_t              productCode,
+                                   std::chrono::system_clock::time_point time)
 {
    bool radarProductViewCreated = false;
 
@@ -380,8 +385,8 @@ void MapWidget::SelectRadarProduct(common::RadarProductGroup group,
 
    if (radarProductView != nullptr)
    {
-      // Always select the latest product available
+      // Select the time associated with the request
-      radarProductView->SelectTime({});
+      radarProductView->SelectTime(time);
 
       if (radarProductViewCreated)
       {
@@ -399,7 +404,8 @@ void MapWidget::SelectRadarProduct(common::RadarProductGroup group,
 
    if (p->autoRefreshEnabled_)
    {
-      p->radarProductManager_->EnableRefresh(group, productName, true);
+      p->radarProductManager_->EnableRefresh(
+         group, productName, true, p->uuid_);
    }
 }
 
@@ -485,7 +491,8 @@ void MapWidget::SetAutoRefresh(bool enabled)
          p->radarProductManager_->EnableRefresh(
             radarProductView->GetRadarProductGroup(),
             radarProductView->GetRadarProductName(),
-            true);
+            true,
+            p->uuid_);
       }
    }
 }

scwx-qt/source/scwx/qt/map/map_widget.hpp

@@ -41,12 +41,23 @@ public:
    common::RadarProductGroup          GetRadarProductGroup() const;
    std::string                        GetRadarProductName() const;
    std::shared_ptr<config::RadarSite> GetRadarSite() const;
-   uint16_t                           GetVcp() const;
+   std::uint16_t                      GetVcp() const;
 
    void SelectElevation(float elevation);
+
+   /**
+    * @brief Selects a radar product.
+    *
+    * @param [in] group Radar product group
+    * @param [in] product Radar product name
+    * @param [in] productCode Radar product code (optional)
+    * @paran [in] time Product time. Default is the latest available.
+    */
    void SelectRadarProduct(common::RadarProductGroup group,
                            const std::string&        product,
-                           int16_t                   productCode);
+                           std::int16_t              productCode      = 0,
+                           std::chrono::system_clock::time_point time = {});
+
    void SelectRadarProduct(std::shared_ptr<types::RadarProductRecord> record);
 
    /**

scwx-qt/source/scwx/qt/model/radar_product_model.cpp

@@ -105,10 +105,16 @@ RadarProductModelImpl::RadarProductModelImpl(RadarProductModel* self) :
                   }
                }
 
+               // Find existing time item (e.g., 2023-04-10 10:11:12)
+               const QString timeString =
+                  QString::fromStdString(util::TimeString(latestTime));
+               TreeItem* timeItem = productItem->FindChild(0, timeString);
+
+               if (timeItem == nullptr)
+               {
                   // Create leaf item for product time
-               model_->AppendRow(productItem,
+                  model_->AppendRow(productItem, new TreeItem {timeString});
-                                 new TreeItem {QString::fromStdString(
+               }
-                                    util::TimeString(latestTime))});
             },
             Qt::QueuedConnection);
       });

scwx-qt/source/scwx/qt/ui/level2_products_widget.cpp

@@ -119,8 +119,7 @@ void Level2ProductsWidgetImpl::UpdateProductSelection(
 {
    const std::string& productName = common::GetLevel2Name(product);
 
-   std::for_each(std::execution::par_unseq,
+   std::for_each(productButtons_.cbegin(),
-                 productButtons_.cbegin(),
                  productButtons_.cend(),
                  [&](auto& toolButton)
                  {

scwx-qt/source/scwx/qt/ui/level2_settings_widget.cpp

@@ -51,7 +51,6 @@ public:
 
    void NormalizeElevationButtons();
    void SelectElevation(float elevation);
-   void UpdateSettings();
 
    Level2SettingsWidget* self_;
    QLayout*              layout_;
@@ -135,8 +134,7 @@ void Level2SettingsWidget::UpdateElevationSelection(float elevation)
    QString buttonText {QString::number(elevation, 'f', 1) +
                        common::Characters::DEGREE};
 
-   std::for_each(std::execution::par_unseq,
+   std::for_each(p->elevationButtons_.cbegin(),
-                 p->elevationButtons_.cbegin(),
                  p->elevationButtons_.cend(),
                  [&](auto& toolButton)
                  {

scwx-qt/source/scwx/qt/ui/level3_products_widget.cpp

@@ -258,8 +258,7 @@ void Level3ProductsWidgetImpl::UpdateCategorySelection(
 {
    const std::string& categoryName = common::GetLevel3CategoryName(category);
 
-   std::for_each(std::execution::par_unseq,
+   std::for_each(categoryButtons_.cbegin(),
-                 categoryButtons_.cbegin(),
                  categoryButtons_.cend(),
                  [&](auto& toolButton)
                  {

scwx-qt/source/scwx/qt/view/level2_product_view.cpp

@@ -44,7 +44,6 @@ public:
    explicit Level2ProductViewImpl(common::Level2Product product) :
        product_ {product},
        selectedElevation_ {0.0f},
-       selectedTime_ {},
        elevationScan_ {nullptr},
        momentDataBlock0_ {nullptr},
        latitude_ {},
@@ -73,7 +72,6 @@ public:
    wsr88d::rda::DataBlockType dataBlockType_;
 
    float selectedElevation_;
-   std::chrono::system_clock::time_point selectedTime_;
 
    std::shared_ptr<wsr88d::rda::ElevationScan>   elevationScan_;
    std::shared_ptr<wsr88d::rda::MomentDataBlock> momentDataBlock0_;
@@ -108,9 +106,36 @@ Level2ProductView::Level2ProductView(
     RadarProductView(radarProductManager),
     p(std::make_unique<Level2ProductViewImpl>(product))
 {
+   ConnectRadarProductManager();
 }
 Level2ProductView::~Level2ProductView() = default;
 
+void Level2ProductView::ConnectRadarProductManager()
+{
+   connect(radar_product_manager().get(),
+           &manager::RadarProductManager::DataReloaded,
+           this,
+           [this](std::shared_ptr<types::RadarProductRecord> record)
+           {
+              if (record->radar_product_group() ==
+                     common::RadarProductGroup::Level2 &&
+                  record->time() == selected_time())
+              {
+                 // If the data associated with the currently selected time is
+                 // reloaded, update the view
+                 Update();
+              }
+           });
+}
+
+void Level2ProductView::DisconnectRadarProductManager()
+{
+   disconnect(radar_product_manager().get(),
+              &manager::RadarProductManager::DataReloaded,
+              this,
+              nullptr);
+}
+
 const std::vector<boost::gil::rgba8_pixel_t>&
 Level2ProductView::color_table() const
 {
@@ -243,11 +268,6 @@ void Level2ProductView::SelectProduct(const std::string& productName)
    p->SetProduct(productName);
 }
 
-void Level2ProductView::SelectTime(std::chrono::system_clock::time_point time)
-{
-   p->selectedTime_ = time;
-}
-
 void Level2ProductViewImpl::SetProduct(const std::string& productName)
 {
    SetProduct(common::GetLevel2Product(productName));
@@ -376,9 +396,18 @@ void Level2ProductView::ComputeSweep()
       radar_product_manager();
 
    std::shared_ptr<wsr88d::rda::ElevationScan> radarData;
-   std::tie(radarData, p->elevationCut_, p->elevationCuts_) =
+   std::chrono::system_clock::time_point       requestedTime {selected_time()};
+   std::chrono::system_clock::time_point       foundTime;
+   std::tie(radarData, p->elevationCut_, p->elevationCuts_, foundTime) =
       radarProductManager->GetLevel2Data(
-         p->dataBlockType_, p->selectedElevation_, p->selectedTime_);
+         p->dataBlockType_, p->selectedElevation_, requestedTime);
+
+   // If a different time was found than what was requested, update it
+   if (requestedTime != foundTime)
+   {
+      SelectTime(foundTime);
+   }
+
    if (radarData == nullptr || radarData == p->elevationScan_)
    {
       return;

scwx-qt/source/scwx/qt/view/level2_product_view.hpp

@@ -28,31 +28,34 @@ public:
    ~Level2ProductView();
 
    const std::vector<boost::gil::rgba8_pixel_t>& color_table() const override;
-   uint16_t                              color_table_min() const override;
+   std::uint16_t                         color_table_min() const override;
-   uint16_t                              color_table_max() const override;
+   std::uint16_t                         color_table_max() const override;
    float                                 elevation() const override;
    float                                 range() const override;
    std::chrono::system_clock::time_point sweep_time() const override;
-   uint16_t                              vcp() const override;
+   std::uint16_t                         vcp() const override;
    const std::vector<float>&             vertices() const override;
 
    void LoadColorTable(std::shared_ptr<common::ColorTable> colorTable) override;
    void SelectElevation(float elevation) override;
    void SelectProduct(const std::string& productName) override;
-   void SelectTime(std::chrono::system_clock::time_point time) override;
    void Update() override;
 
    common::RadarProductGroup GetRadarProductGroup() const override;
    std::string               GetRadarProductName() const override;
    std::vector<float>        GetElevationCuts() const override;
-   std::tuple<const void*, size_t, size_t> GetMomentData() const override;
+   std::tuple<const void*, std::size_t, std::size_t>
-   std::tuple<const void*, size_t, size_t> GetCfpMomentData() const override;
+   GetMomentData() const override;
+   std::tuple<const void*, std::size_t, std::size_t>
+   GetCfpMomentData() const override;
 
    static std::shared_ptr<Level2ProductView>
    Create(common::Level2Product                         product,
           std::shared_ptr<manager::RadarProductManager> radarProductManager);
 
 protected:
+   void ConnectRadarProductManager() override;
+   void DisconnectRadarProductManager() override;
    void UpdateColorTable() override;
 
 protected slots:

scwx-qt/source/scwx/qt/view/level3_product_view.cpp

@@ -59,9 +59,37 @@ Level3ProductView::Level3ProductView(
     RadarProductView(radarProductManager),
     p(std::make_unique<Level3ProductViewImpl>(product))
 {
+   ConnectRadarProductManager();
 }
 Level3ProductView::~Level3ProductView() = default;
 
+void Level3ProductView::ConnectRadarProductManager()
+{
+   connect(radar_product_manager().get(),
+           &manager::RadarProductManager::DataReloaded,
+           this,
+           [this](std::shared_ptr<types::RadarProductRecord> record)
+           {
+              if (record->radar_product_group() ==
+                     common::RadarProductGroup::Level3 &&
+                  record->radar_product() == p->product_ &&
+                  record->time() == selected_time())
+              {
+                 // If the data associated with the currently selected time is
+                 // reloaded, update the view
+                 Update();
+              }
+           });
+}
+
+void Level3ProductView::DisconnectRadarProductManager()
+{
+   disconnect(radar_product_manager().get(),
+              &manager::RadarProductManager::DataReloaded,
+              this,
+              nullptr);
+}
+
 const std::vector<boost::gil::rgba8_pixel_t>&
 Level3ProductView::color_table() const
 {

scwx-qt/source/scwx/qt/view/level3_product_view.hpp

@@ -28,8 +28,8 @@ public:
    virtual ~Level3ProductView();
 
    const std::vector<boost::gil::rgba8_pixel_t>& color_table() const override;
-   uint16_t color_table_min() const override;
+   std::uint16_t color_table_min() const override;
-   uint16_t color_table_max() const override;
+   std::uint16_t color_table_max() const override;
 
    void LoadColorTable(std::shared_ptr<common::ColorTable> colorTable) override;
    void Update() override;
@@ -45,6 +45,8 @@ protected:
    void set_graphic_product_message(
       std::shared_ptr<wsr88d::rpg::GraphicProductMessage> gpm);
 
+   void ConnectRadarProductManager() override;
+   void DisconnectRadarProductManager() override;
    void UpdateColorTable() override;
 
 private:

scwx-qt/source/scwx/qt/view/level3_radial_view.cpp

@@ -27,25 +27,18 @@ class Level3RadialViewImpl
 {
 public:
    explicit Level3RadialViewImpl() :
-       selectedTime_ {},
+       latitude_ {}, longitude_ {}, range_ {}, vcp_ {}, sweepTime_ {}
-       latitude_ {},
-       longitude_ {},
-       range_ {},
-       vcp_ {},
-       sweepTime_ {}
    {
    }
    ~Level3RadialViewImpl() = default;
 
-   std::chrono::system_clock::time_point selectedTime_;
-
    std::vector<float>        vertices_;
-   std::vector<uint8_t> dataMoments8_;
+   std::vector<std::uint8_t> dataMoments8_;
 
    float         latitude_;
    float         longitude_;
    float         range_;
-   uint16_t vcp_;
+   std::uint16_t vcp_;
 
    std::chrono::system_clock::time_point sweepTime_;
 };
@@ -92,11 +85,6 @@ std::tuple<const void*, size_t, size_t> Level3RadialView::GetMomentData() const
    return std::tie(data, dataSize, componentSize);
 }
 
-void Level3RadialView::SelectTime(std::chrono::system_clock::time_point time)
-{
-   p->selectedTime_ = time;
-}
-
 void Level3RadialView::ComputeSweep()
 {
    logger_->debug("ComputeSweep()");
@@ -109,9 +97,18 @@ void Level3RadialView::ComputeSweep()
       radar_product_manager();
 
    // Retrieve message from Radar Product Manager
-   std::shared_ptr<wsr88d::rpg::Level3Message> message =
+   std::shared_ptr<wsr88d::rpg::Level3Message> message;
-      radarProductManager->GetLevel3Data(GetRadarProductName(),
+   std::chrono::system_clock::time_point       requestedTime {selected_time()};
-                                         p->selectedTime_);
+   std::chrono::system_clock::time_point       foundTime;
+   std::tie(message, foundTime) =
+      radarProductManager->GetLevel3Data(GetRadarProductName(), requestedTime);
+
+   // If a different time was found than what was requested, update it
+   if (requestedTime != foundTime)
+   {
+      SelectTime(foundTime);
+   }
+
    if (message == nullptr)
    {
       logger_->debug("Level 3 data not found");

scwx-qt/source/scwx/qt/view/level3_radial_view.hpp

@@ -27,12 +27,11 @@ public:
 
    float                                 range() const override;
    std::chrono::system_clock::time_point sweep_time() const override;
-   uint16_t                              vcp() const override;
+   std::uint16_t                         vcp() const override;
    const std::vector<float>&             vertices() const override;
 
-   void SelectTime(std::chrono::system_clock::time_point time) override;
+   std::tuple<const void*, std::size_t, std::size_t>
-
+   GetMomentData() const override;
-   std::tuple<const void*, size_t, size_t> GetMomentData() const override;
 
    static std::shared_ptr<Level3RadialView>
    Create(const std::string&                            product,

scwx-qt/source/scwx/qt/view/level3_raster_view.cpp

@@ -27,18 +27,11 @@ class Level3RasterViewImpl
 {
 public:
    explicit Level3RasterViewImpl() :
-       selectedTime_ {},
+       latitude_ {}, longitude_ {}, range_ {}, vcp_ {}, sweepTime_ {}
-       latitude_ {},
-       longitude_ {},
-       range_ {},
-       vcp_ {},
-       sweepTime_ {}
    {
    }
    ~Level3RasterViewImpl() = default;
 
-   std::chrono::system_clock::time_point selectedTime_;
-
    std::vector<float>   vertices_;
    std::vector<uint8_t> dataMoments8_;
 
@@ -92,11 +85,6 @@ std::tuple<const void*, size_t, size_t> Level3RasterView::GetMomentData() const
    return std::tie(data, dataSize, componentSize);
 }
 
-void Level3RasterView::SelectTime(std::chrono::system_clock::time_point time)
-{
-   p->selectedTime_ = time;
-}
-
 void Level3RasterView::ComputeSweep()
 {
    logger_->debug("ComputeSweep()");
@@ -109,9 +97,18 @@ void Level3RasterView::ComputeSweep()
       radar_product_manager();
 
    // Retrieve message from Radar Product Manager
-   std::shared_ptr<wsr88d::rpg::Level3Message> message =
+   std::shared_ptr<wsr88d::rpg::Level3Message> message;
-      radarProductManager->GetLevel3Data(GetRadarProductName(),
+   std::chrono::system_clock::time_point       requestedTime {selected_time()};
-                                         p->selectedTime_);
+   std::chrono::system_clock::time_point       foundTime;
+   std::tie(message, foundTime) =
+      radarProductManager->GetLevel3Data(GetRadarProductName(), requestedTime);
+
+   // If a different time was found than what was requested, update it
+   if (requestedTime != foundTime)
+   {
+      SelectTime(foundTime);
+   }
+
    if (message == nullptr)
    {
       logger_->debug("Level 3 data not found");

scwx-qt/source/scwx/qt/view/level3_raster_view.hpp

@@ -27,12 +27,11 @@ public:
 
    float                                 range() const override;
    std::chrono::system_clock::time_point sweep_time() const override;
-   uint16_t                              vcp() const override;
+   std::uint16_t                         vcp() const override;
    const std::vector<float>&             vertices() const override;
 
-   void SelectTime(std::chrono::system_clock::time_point time) override;
+   std::tuple<const void*, std::size_t, std::size_t>
-
+   GetMomentData() const override;
-   std::tuple<const void*, size_t, size_t> GetMomentData() const override;
 
    static std::shared_ptr<Level3RasterView>
    Create(const std::string&                            product,

scwx-qt/source/scwx/qt/view/radar_product_view.cpp

@@ -16,12 +16,12 @@ static const std::string logPrefix_ = "scwx::qt::view::radar_product_view";
 static const auto        logger_    = scwx::util::Logger::Create(logPrefix_);
 
 // Default color table should be transparent to prevent flicker
-static const std::vector<boost::gil::rgba8_pixel_t> DEFAULT_COLOR_TABLE = {
+static const std::vector<boost::gil::rgba8_pixel_t> kDefaultColorTable_ = {
    boost::gil::rgba8_pixel_t(0, 128, 0, 0),
    boost::gil::rgba8_pixel_t(255, 192, 0, 0),
    boost::gil::rgba8_pixel_t(255, 0, 0, 0)};
-static const uint16_t DEFAULT_COLOR_TABLE_MIN = 2u;
+static const std::uint16_t kDefaultColorTableMin_ = 2u;
-static const uint16_t DEFAULT_COLOR_TABLE_MAX = 255u;
+static const std::uint16_t kDefaultColorTableMax_ = 255u;
 
 class RadarProductViewImpl
 {
@@ -30,6 +30,7 @@ public:
       std::shared_ptr<manager::RadarProductManager> radarProductManager) :
        initialized_ {false},
        sweepMutex_ {},
+       selectedTime_ {},
        radarProductManager_ {radarProductManager}
    {
    }
@@ -38,6 +39,8 @@ public:
    bool       initialized_;
    std::mutex sweepMutex_;
 
+   std::chrono::system_clock::time_point selectedTime_;
+
    std::shared_ptr<manager::RadarProductManager> radarProductManager_;
 };
 
@@ -49,17 +52,17 @@ RadarProductView::~RadarProductView() = default;
 const std::vector<boost::gil::rgba8_pixel_t>&
 RadarProductView::color_table() const
 {
-   return DEFAULT_COLOR_TABLE;
+   return kDefaultColorTable_;
 }
 
-uint16_t RadarProductView::color_table_min() const
+std::uint16_t RadarProductView::color_table_min() const
 {
-   return DEFAULT_COLOR_TABLE_MIN;
+   return kDefaultColorTableMin_;
 }
 
-uint16_t RadarProductView::color_table_max() const
+std::uint16_t RadarProductView::color_table_max() const
 {
-   return DEFAULT_COLOR_TABLE_MAX;
+   return kDefaultColorTableMax_;
 }
 
 float RadarProductView::elevation() const
@@ -78,6 +81,11 @@ float RadarProductView::range() const
    return 0.0f;
 }
 
+std::chrono::system_clock::time_point RadarProductView::selected_time() const
+{
+   return p->selectedTime_;
+}
+
 std::chrono::system_clock::time_point RadarProductView::sweep_time() const
 {
    return {};
@@ -91,7 +99,9 @@ std::mutex& RadarProductView::sweep_mutex()
 void RadarProductView::set_radar_product_manager(
    std::shared_ptr<manager::RadarProductManager> radarProductManager)
 {
+   DisconnectRadarProductManager();
    p->radarProductManager_ = radarProductManager;
+   ConnectRadarProductManager();
 }
 
 void RadarProductView::Initialize()
@@ -103,6 +113,11 @@ void RadarProductView::Initialize()
 
 void RadarProductView::SelectElevation(float /*elevation*/) {}
 
+void RadarProductView::SelectTime(std::chrono::system_clock::time_point time)
+{
+   p->selectedTime_ = time;
+}
+
 bool RadarProductView::IsInitialized() const
 {
    return p->initialized_;
@@ -113,12 +128,12 @@ std::vector<float> RadarProductView::GetElevationCuts() const
    return {};
 }
 
-std::tuple<const void*, size_t, size_t>
+std::tuple<const void*, std::size_t, std::size_t>
 RadarProductView::GetCfpMomentData() const
 {
    const void* data          = nullptr;
-   size_t      dataSize      = 0;
+   std::size_t dataSize      = 0;
-   size_t      componentSize = 0;
+   std::size_t componentSize = 0;
 
    return std::tie(data, dataSize, componentSize);
 }

scwx-qt/source/scwx/qt/view/radar_product_view.hpp

@@ -30,15 +30,16 @@ public:
    virtual ~RadarProductView();
 
    virtual const std::vector<boost::gil::rgba8_pixel_t>& color_table() const;
-   virtual uint16_t                              color_table_min() const;
+   virtual std::uint16_t                         color_table_min() const;
-   virtual uint16_t                              color_table_max() const;
+   virtual std::uint16_t                         color_table_max() const;
    virtual float                                 elevation() const;
    virtual float                                 range() const;
    virtual std::chrono::system_clock::time_point sweep_time() const;
-   virtual uint16_t                              vcp() const      = 0;
+   virtual std::uint16_t                         vcp() const      = 0;
    virtual const std::vector<float>&             vertices() const = 0;
 
    std::shared_ptr<manager::RadarProductManager> radar_product_manager() const;
+   std::chrono::system_clock::time_point         selected_time() const;
    std::mutex&                                   sweep_mutex();
 
    void set_radar_product_manager(
@@ -49,7 +50,7 @@ public:
    LoadColorTable(std::shared_ptr<common::ColorTable> colorTable) = 0;
    virtual void SelectElevation(float elevation);
    virtual void SelectProduct(const std::string& productName) = 0;
-   virtual void SelectTime(std::chrono::system_clock::time_point time) = 0;
+   void         SelectTime(std::chrono::system_clock::time_point time);
    virtual void Update() = 0;
 
    bool IsInitialized() const;
@@ -57,10 +58,14 @@ public:
    virtual common::RadarProductGroup GetRadarProductGroup() const = 0;
    virtual std::string               GetRadarProductName() const  = 0;
    virtual std::vector<float>        GetElevationCuts() const;
-   virtual std::tuple<const void*, size_t, size_t> GetMomentData() const = 0;
+   virtual std::tuple<const void*, std::size_t, std::size_t>
-   virtual std::tuple<const void*, size_t, size_t> GetCfpMomentData() const;
+   GetMomentData() const = 0;
+   virtual std::tuple<const void*, std::size_t, std::size_t>
+   GetCfpMomentData() const;
 
 protected:
+   virtual void ConnectRadarProductManager()    = 0;
+   virtual void DisconnectRadarProductManager() = 0;
    virtual void UpdateColorTable()              = 0;
 
 protected slots:

wxdata/include/scwx/util/map.hpp

@@ -8,10 +8,10 @@ namespace scwx
 namespace util
 {
 
-template<class Key, class T, class ReturnType = std::optional<T>>
+template<class Key, class T, class ReturnType = std::map<Key, T>::const_pointer>
-ReturnType GetBoundedElement(std::map<Key, T>& map, Key key)
+ReturnType GetBoundedElementPointer(std::map<Key, T>& map, const Key& key)
 {
-   ReturnType element;
+   ReturnType elementPtr {nullptr};
 
    // Find the first element greater than the key requested
    auto it = map.upper_bound(key);
@@ -24,26 +24,42 @@ ReturnType GetBoundedElement(std::map<Key, T>& map, Key key)
       {
          // Get the element immediately preceding, this the element we are
          // looking for
-         element = (--it)->second;
+         elementPtr = &(*(--it));
       }
       else
       {
          // The current element is a good substitute
-         element = it->second;
+         elementPtr = &(*it);
       }
    }
    else if (map.size() > 0)
    {
       // An element with a key greater was not found. If it exists, it must be
       // the last element.
-      element = map.rbegin()->second;
+      elementPtr = &(*map.rbegin());
+   }
+
+   return elementPtr;
+}
+
+template<class Key, class T, class ReturnType = std::optional<T>>
+ReturnType GetBoundedElement(std::map<Key, T>& map, const Key& key)
+{
+   ReturnType element;
+
+   typename std::map<Key, T>::pointer elementPtr =
+      GetBoundedElementPointer<Key, T, typename std::map<Key, T>::pointer>(map,
+                                                                           key);
+   if (elementPtr != nullptr)
+   {
+      element = elementPtr->second;
    }
 
    return element;
 }
 
 template<class Key, class T>
-inline T GetBoundedElementValue(std::map<Key, T>& map, Key key)
+inline T GetBoundedElementValue(std::map<Key, T>& map, const Key& key)
 {
    return GetBoundedElement<Key, T, T>(map, key);
 }