Add Telemetry for History Item

src/CalcViewModel/Common/TraceLogger.cpp

@@ -77,6 +77,7 @@ namespace CalculatorApp
 
     constexpr auto EVENT_NAME_MODE_CHANGED = L"ModeChanged";
     constexpr auto EVENT_NAME_DATE_CALCULATION_MODE_USED = L"DateCalculationModeUsed";
+    constexpr auto EVENT_NAME_HISTORY_ITEM_LOAD = L"HistoryItemLoad";
 
     constexpr auto EVENT_NAME_EXCEPTION = L"Exception";
 
@@ -87,8 +88,8 @@ namespace CalculatorApp
     // c.f. WINEVENT_KEYWORD_RESERVED_63-56 0xFF00000000000000 // Bits 63-56 - channel keywords
     // c.f. WINEVENT_KEYWORD_*              0x00FF000000000000 // Bits 55-48 - system-reserved keywords
     constexpr int64_t MICROSOFT_KEYWORD_LEVEL_1 = 0x0000800000000000; // Bit 47
-    constexpr int64_t MICROSOFT_KEYWORD_LEVEL_2 = 0x0000400000000000;      // Bit 46
+    constexpr int64_t MICROSOFT_KEYWORD_LEVEL_2 = 0x0000400000000000; // Bit 46
-    constexpr int64_t MICROSOFT_KEYWORD_LEVEL_3 = 0x0000200000000000;     // Bit 45
+    constexpr int64_t MICROSOFT_KEYWORD_LEVEL_3 = 0x0000200000000000; // Bit 45
 #else
     // define all Keyword options as 0 when we do not want to upload app telemetry
     constexpr int64_t MICROSOFT_KEYWORD_LEVEL_1 = 0;
@@ -541,6 +542,20 @@ namespace CalculatorApp
         }
     }
 
+    void TraceLogger::LogHistoryItemLoad(ViewMode mode, int historyListSize) const
+    {
+        if (!GetTraceLoggingProviderEnabled())
+        {
+            return;
+        }
+
+        LoggingFields fields{};
+        // cast mode to an int for telemetry
+        fields.AddInt32(L"CalcMode", NavCategory::Serialize(mode));
+        fields.AddInt32(L"HistoryListSize", historyListSize);
+        LogLevel2Event(EVENT_NAME_HISTORY_ITEM_LOAD, fields);
+    }
+
     void TraceLogger::LogHistoryItemLoadBegin() const
     {
         if (!GetTraceLoggingProviderEnabled())

src/CalcViewModel/Common/TraceLogger.h

@@ -65,6 +65,7 @@ namespace CalculatorApp
         void LogSharedMemoryUsed(std::wstring_view, std::wstring_view, unsigned int) const;
         void LogMemoryBodyOpened() const;
         void LogModeChange(CalculatorApp::Common::ViewMode mode) const;
+        void LogHistoryItemLoad(CalculatorApp::Common::ViewMode mode, int historyListSize) const;
         void LogMemoryFlyoutOpenBegin(unsigned int) const;
         void LogDebug(std::wstring_view debugData);
         void LogMemoryFlyoutOpenEnd(unsigned int) const;

src/Calculator/Views/Calculator.xaml.cpp

@@ -457,6 +457,8 @@ void Calculator::OnHistoryItemClicked(_In_ HistoryItemViewModel ^ e)
     Model->IsFToEEnabled = false;
 
     TraceLogger::GetInstance().LogHistoryItemLoadEnd(tokenSize);
+    auto mode = IsScientific ? ViewMode::Scientific : ViewMode::Standard;
+    TraceLogger::GetInstance().LogHistoryItemLoad(mode, tokenSize);
     CloseHistoryFlyout();
     this->Focus(::FocusState::Programmatic);
 }