DP44/docs/ai/DTS Viewer/DTS.Viewer.Reports/DTS.Viewer.PSDReport/View.md

source_files, generated_at, model, schema_version, sha256

source_files	generated_at	model	schema_version	sha256
DTS Viewer/DTS.Viewer.Reports/DTS.Viewer.PSDReport/View/PSDReportMainView.xaml.cs DTS Viewer/DTS.Viewer.Reports/DTS.Viewer.PSDReport/View/PSDReportMainViewGrid.xaml.cs	2026-04-17T16:11:57.315846+00:00	zai-org/GLM-5-FP8	1	a6e4756ad90b5059

View

Purpose

This module provides WPF view components for the PSD (Power Spectral Density) Report feature. It contains two partial classes that serve as code-behind for XAML views, handling view initialization and UI event coordination. The module acts as the presentation layer for PSD report visualization, managing tab focus and responding to graph loading events.

Public Interface

PSDReportMainView (implements IPSDReportMainView)

• PSDReportMainView() - Default constructor that calls InitializeComponent(). Contains commented-out code for AvalonDock layout serialization/deserialization via XmlLayoutSerializer.

PSDReportMainViewGrid (implements IPSDReportMainViewGrid)

• PSDReportMainViewGrid() - Constructor that calls InitializeComponent() and registers a Loaded event handler.
• PSDReportMainViewGrid_Loaded(object sender, RoutedEventArgs e) - Private event handler that resolves IEventAggregator from ContainerLocator.Container and subscribes to GraphLoadedCountNotification event.
• OnGraphLoadedCountNotification(GraphLoadedCountNotificationArg arg) - Private callback that validates the DataContext matches arg.ParentVM, then spawns a background task that waits 3 seconds before setting focus to chartResultsTab via Dispatcher.BeginInvoke.
• SetFocus() - Private method that selects, makes focusable, and focuses chartResultsTab.

Invariants

• PSDReportMainViewGrid._eventAggregator is null until the Loaded event fires.
• OnGraphLoadedCountNotification will early-return if DataContext is null or does not match arg.ParentVM (cast to IBaseViewModel).
• The 3-second delay in OnGraphLoadedCountNotification is hardcoded and unconditional when the callback proceeds.

Dependencies

Depends on:

• DTS.Common.Interface (IPSDReportMainView, IPSDReportMainViewGrid, IBaseViewModel)
• DTS.Common.Base (referenced but usage unclear from source)
• DTS.Common.Events (GraphLoadedCountNotification, GraphLoadedCountNotificationArg)
• Prism.Ioc (ContainerLocator)
• Prism.Events (IEventAggregator)

Depended on by: Not determinable from source alone.

Gotchas

• FB 14797 reference: The code comments reference a bug/feature request number, indicating the event subscription pattern was added to fix a timing issue with IEventAggregator availability.
• Hardcoded 3-second delay: The Thread.Sleep(TimeSpan.FromSeconds(3)) is a magic number with no configuration. This may be insufficient on slower systems or unnecessarily long on faster ones.
• Commented-out AvalonDock code: PSDReportMainView contains significant commented-out code for dock layout persistence. It's unclear if this functionality was removed intentionally or is work-in-progress.
• Namespace suppression: Multiple ReSharper disable comments suggest the namespace may not match the folder structure convention.

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