Fix LT-21999: Disable Save Report on comparison reports (#232)

Co-authored-by: Jason Naylor <[email protected]>

Src/LexText/ParserCore/ParserReport.cs

@@ -237,6 +237,7 @@ public ParserReport DiffParserReports(ParserReport other)
 			diff.ProjectName = DiffNames(ProjectName, other.ProjectName);
 			diff.SourceText = DiffNames(SourceText, other.SourceText);
 			diff.MachineName = DiffNames(MachineName, other.MachineName);
+			diff.Comment = DiffNames(Comment, other.Comment);
 			diff.Timestamp = Timestamp;
 			diff.DiffTimestamp = other.Timestamp;
 			diff.NumWords = NumWords - other.NumWords;

Src/LexText/ParserUI/ParserReportDialog.xaml

@@ -188,6 +188,7 @@
 		<StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Left" Height="40">
 			<Button Content="{x:Static local:ParserUIStrings.ksSaveReport}"
                     ToolTip="{x:Static local:ParserUIStrings.ksSaveReportToolTip}"
+					IsEnabled="{Binding CanSaveReport}"
                     Click="SaveParserReport" Width="100" Margin="5"/>
 			<Label x:Name="commentLabel" Height="27"/>
 			<Label Content="{Binding DisplayComment, Mode=OneWay}" Height="27"/>

Src/LexText/ParserUI/ParserReportViewModel.cs

@@ -28,7 +28,7 @@ public string DisplayComment
 		{
 			get
 			{
-				if (ParserReport.Filename == null)
+				if (ParserReport.Filename == null && !ParserReport.IsDiff)
 				{
 					return ParserUIStrings.ksUnsavedParserReport;
 				}
@@ -60,6 +60,9 @@ public bool IsSelected
 			}
 		}
 
+		public bool CanSaveReport => !ParserReport.IsDiff;
+
+
 		public ParserReportViewModel()
 		{
 			ParserReport = new ParserReport();