SIL.Cog.Application.ViewModels.GlobalCorrespondencesViewModel.GlobalCorrespondencesViewModel C# (CSharp) Method

        public GlobalCorrespondencesViewModel(IProjectService projectService, IBusyService busyService, IDialogService dialogService, IImageExportService imageExportService, IGraphService graphService,
			WordPairsViewModel.Factory wordPairsFactory, WordPairViewModel.Factory wordPairFactory)
            : base("Global Correspondences")
        {
            _projectService = projectService;
            _busyService = busyService;
            _dialogService = dialogService;
            _imageExportService = imageExportService;
            _graphService = graphService;
            _wordPairFactory = wordPairFactory;

            _selectedVarieties = new HashSet<Variety>();

            _projectService.ProjectOpened += _projectService_ProjectOpened;

            Messenger.Default.Register<ComparisonPerformedMessage>(this, msg => GenerateGraph());
            Messenger.Default.Register<DomainModelChangedMessage>(this, msg =>
            {
                if (msg.AffectsComparison)
                    ClearGraph();
            });
            Messenger.Default.Register<PerformingComparisonMessage>(this, msg => ClearGraph());

            _findCommand = new RelayCommand(Find);

            TaskAreas.Add(new TaskAreaCommandGroupViewModel("Syllable position",
                new TaskAreaCommandViewModel("Onset", new RelayCommand(() => SyllablePosition = SyllablePosition.Onset)),
                new TaskAreaCommandViewModel("Nucleus", new RelayCommand(() => SyllablePosition = SyllablePosition.Nucleus)),
                new TaskAreaCommandViewModel("Coda", new RelayCommand(() => SyllablePosition = SyllablePosition.Coda))));
            _correspondenceFilter = new TaskAreaIntegerViewModel("Frequency threshold");
            _correspondenceFilter.PropertyChanging += _correspondenceFilter_PropertyChanging;
            _correspondenceFilter.PropertyChanged += _correspondenceFilter_PropertyChanged;
            TaskAreas.Add(_correspondenceFilter);
            TaskAreas.Add(new TaskAreaItemsViewModel("Common tasks",
                new TaskAreaCommandViewModel("Find words", _findCommand),
                new TaskAreaItemsViewModel("Sort word pairs by", new TaskAreaCommandGroupViewModel(
                    new TaskAreaCommandViewModel("Gloss", new RelayCommand(() => _observedWordPairs.UpdateSort("Meaning.Gloss", ListSortDirection.Ascending))),
                    new TaskAreaCommandViewModel("Similarity", new RelayCommand(() => _observedWordPairs.UpdateSort("PhoneticSimilarityScore", ListSortDirection.Descending))))),
                new TaskAreaCommandViewModel("Select varieties", new RelayCommand(SelectVarieties))
                ));
            TaskAreas.Add(new TaskAreaItemsViewModel("Other tasks",
                new TaskAreaCommandViewModel("Export chart", new RelayCommand(ExportChart, CanExportChart))));
            _observedWordPairs = wordPairsFactory();
            _observedWordPairs.IncludeVarietyNamesInSelectedText = true;
            _observedWordPairs.UpdateSort("Meaning.Gloss", ListSortDirection.Ascending);
        }