36 lines
1.8 KiB
Markdown
36 lines
1.8 KiB
Markdown
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---
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source_files:
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- DTS Viewer/DTS.Viewer.Modules/DTS.Viewer.Graph/ViewModel/GraphViewModel.cs
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generated_at: "2026-04-17T15:54:22.914651+00:00"
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model: "zai-org/GLM-5-FP8"
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schema_version: 1
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sha256: "469500f219f64049"
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---
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# GraphViewModel Documentation
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## 1. Purpose
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`GraphViewModel` is a Prism-based MVVM ViewModel that manages graph visualization within the DTS Viewer application. It serves as a coordinator between parent views (`IViewerMainViewModel` or `IPSDReportMainViewModel`), child views (`ITestDataSeriesView`), and the event aggregation system. The class handles channel selection state, displays progress indicators during data loading operations, and manages UI visibility states for messaging and graph display regions.
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---
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## 2. Public Interface
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### Constructor
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```csharp
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public GraphViewModel(IGraphView view, IRegionManager regionManager, IEventAggregator eventAggregator, IUnityContainer unityContainer)
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```
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Initializes the ViewModel, sets the View's DataContext to itself, and creates `NotificationRequest` and `ConfirmationRequest` instances.
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### Properties
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| Property | Type | Access | Description |
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|----------|------|--------|-------------|
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| `View` | `IGraphView` | get; private set; | The associated graph view interface. |
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| `Parent` | `IBaseViewModel` | internal get; set; | Reference to the parent ViewModel. |
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| `DataSeriesView` | `ITestDataSeriesView` | get; set; | The data series view associated with this graph. |
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| `NotificationRequest` | `InteractionRequest<Notification>` | get; private set; | Used to raise notification dialogs. |
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| `ConfirmationRequest` | `InteractionRequest<Confirmation>` | get; private set; | Used to raise confirmation dialogs. |
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| `ContextGraphRegion` | `object` | get; set; | Wraps `((GraphView)View).GraphRegion.Content` with property change notification. |
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