DP44/docs/ai/DTS Viewer/DTS.Viewer.Modules/DTS.Viewer.TestSummaryList/ViewModel.md

---
source_files:
  - DTS Viewer/DTS.Viewer.Modules/DTS.Viewer.TestSummaryList/ViewModel/TestSummaryViewModel.cs
  - DTS Viewer/DTS.Viewer.Modules/DTS.Viewer.TestSummaryList/ViewModel/TestSummaryViewListModel.cs
generated_at: "2026-04-17T15:56:32.359697+00:00"
model: "zai-org/GLM-5-FP8"
schema_version: 1
sha256: "170b78c49a4abb43"
---

# Documentation: TestSummaryList ViewModels

## 1. Purpose

This module provides two ViewModel implementations (`TestSummaryViewModel` and `TestSummaryViewListModel`) for managing and displaying test summary data within the DTS Viewer application. Both classes implement `ITestSummaryListViewModel` and serve as intermediaries between test summary data models and their associated views, handling user interactions, event aggregation for cross-component communication, data filtering, and sorting. The module exists to support the Prism-based MVVM architecture, coordinating test summary selection, folder/file data loading, and notification publishing to other application components.

---

## 2. Public Interface

### TestSummaryViewModel

**Constructor:**
```csharp
public TestSummaryViewModel(ITestSummaryListView view, IRegionManager regionManager, IEventAggregator eventAggregator, IUnityContainer unityContainer)
```
Initializes the ViewModel, sets the view's DataContext, creates interaction requests, and subscribes to `RaiseNotification` and `DataFolderChangedEvent` events.

**Methods:**

| Method | Signature | Description |
|--------|-----------|-------------|
| `Initialize` | `void Initialize()` | Empty override. |
| `Initialize` | `void Initialize(object parameter)` | Casts parameter to `IBaseWindowModel` and assigns to `Parent`. |
| `Activated` | `void Activated()` | Throws `NotImplementedException`. |
| `Cleanup` | `void Cleanup()` | Throws `NotImplementedException`. |
| `CleanupAsync` | `Task CleanupAsync()` | Throws `NotImplementedException`. |
| `InitializeAsync` | `Task InitializeAsync()` | Throws `NotImplementedException`. |
| `InitializeAsync` | `Task InitializeAsync(object parameter)` | Throws `NotImplementedException`. |
| `PublishSelectedTestSummaryList` | `void PublishSelectedTestSummaryList()` | Publishes `TestSummaryChangeNotification` and `TestSelectedChangedEvent` events with current selection. |

**Properties:**

| Property | Type | Description |
|----------|------|-------------|
| `TestSummaryListView` | `ITestSummaryListView` | The associated view instance. |
| `NotificationRequest` | `InteractionRequest<Notification>` | Prism interaction request for notifications. |
| `ConfirmationRequest` | `InteractionRequest<Confirmation>` | Prism interaction request for confirmations. |
| `ContextNavigationRegion` | `object` | Gets/sets content of `TestListRegion` on the view. |
| `SelectedTestSummary` | `TestSummary` | Currently selected single test summary. |
| `SelectedTestSummaryList` | `List<ITestSummary>` | List of selected test summaries. |
| `TestSummaryList` | `ObservableCollection<ITestSummary>` | Collection of all test summaries. |
| `HeaderInfo` | `string` | Returns `"TestSummaryRegion"`. |
| `IsBusy` | `bool` | Busy indicator state. |
| `IsDirty` | `bool` | Dirty state flag. |
| `IsNavigationIncluded` | `bool` | Navigation inclusion flag. |

**Events:**
- `PropertyChanged` - Custom `PropertyChangedEventHandler` (hides base implementation with `new`).

---

### TestSummaryViewListModel

**Constructor:**
```csharp
public TestSummaryViewListModel(ITestSummaryListView view, IRegionManager regionManager, IEventAggregator eventAggregator, IUnityContainer unityContainer)
```
Initializes the ViewModel, sets the view's DataContext, creates interaction requests, and stores dependencies.

**Methods:**

| Method | Signature | Description |
|--------|-----------|-------------|
| `Initialize` | `void Initialize()` | Empty override. |
| `Initialize` | `void Initialize(object parameter)` | Sets `Parent`, initializes `FilterView`, attaches collection changed handlers, and calls `Subscribe()`. |
| `OnFilterChanged` | `void OnFilterChanged(FilterParameterArgs args)` | Filters `FilteredTestSummaryList` based on `SetupName`, `Id`, or `Description` containing the parameter string. |
| `Activated` | `void Activated()` | Publishes empty `FilterParameterChangedEvent` to reset filter. |
| `Cleanup` | `void Cleanup()` | Clears all collections, resets `SelectedTestSummary`, and publishes selection changes. |
| `PublishSelectedTestSummaryList` | `void PublishSelectedTestSummaryList()` | Publishes `TestSummaryChangeNotification`, `TestSummaryCountNotification`, and `ResetZoomChangedEvent`. |
| `RefreshDataFolder` | `void RefreshDataFolder()` | Publishes `DataFolderChangedEvent` via dispatcher. |
| `SelectDataFolder` | `void SelectDataFolder()` | Opens `OpenFileDialog` for .dts files and publishes `DataFileSelectedEvent`. |
| `SortTestSummaryList` | `void SortTestSummaryList()` | Sorts `FilteredTestSummaryList` based on `SelectedSortIndex`. |

**Properties:**

| Property | Type | Description |
|----------|------|-------------|
| `FilterView` | `IFilterView` | Resolved filter view instance. |
| `View` | `ITestSummaryListView` | The associated view instance. |
| `NotificationRequest` | `InteractionRequest<Notification>` | Prism interaction request for notifications. |
| `ConfirmationRequest` | `InteractionRequest<Confirmation>` | Prism interaction request for confirmations. |
| `ContextNavigationRegion` | `object` | Gets/sets DataContext of `TestListRegion` on the view. |
| `IsFilterEnabled` | `bool` | Indicates if filtering is available (true when list has items). |
| `SelectedTestSummary` | `TestSummary` | Currently selected single test summary. |
| `SelectedTestSummaryList` | `List<ITestSummary>` | List of selected test summaries. |
| `TestSummaryList` | `ObservableCollection<ITestSummary>` | Full collection; setter updates `IsFilterEnabled` and `FilteredTestSummaryList`. |
| `FilteredTestSummaryList` | `ObservableCollection<ITestSummary>` | Filtered/sorted view of test summaries. |
| `HeaderInfo` | `string` | Returns `"TestSummaryRegion"`. |
| `IsBusy` | `bool` | Busy indicator state. |
| `IsDirty` | `bool` | Dirty state flag. |
| `IsNavigationIncluded` | `bool` | Navigation inclusion flag. |
| `SelectedDataFolder` | `string` | Selected folder path; setter publishes `DataFolderChangedEvent`. |
| `SelectedDataFile` | `string` | Selected file path; setter publishes `DataFolderChangedEvent`. |
| `SortableAttributes` | `List<string>` | Localized list of sortable attribute names. |
| `SelectedSortIndex` | `int` | Index of selected sort; setter triggers `SortTestSummaryList()`. |

**Commands:**

| Command | Type | Description |
|---------|------|-------------|
| `Refresh