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

source_files, generated_at, model, schema_version, sha256

source_files	generated_at	model	schema_version	sha256
DTS Viewer/DTS.Viewer.Modules/DTS.Viewer.GraphList/ViewModel/GraphMainViewModel.cs	2026-04-17T15:56:47.220918+00:00	zai-org/GLM-5-FP8	1	2bd73de841af2654

Documentation: GraphMainViewModel

1. Purpose

The GraphMainViewModel class serves as the presentation logic controller for the Graph List module within the DTS Viewer application. Its primary responsibility is to manage the display, filtering, selection, and locking of test channels (including graph channels, calculated channels, and raw test channels) derived from ITestSummary objects. It acts as a bridge between the data layer (test summaries) and the UI layer (tree views, lists), coordinating user interactions via Prism's IEventAggregator to publish channel selections and notify other modules of state changes.

2. Public Interface

Properties

• IFilterView FilterView: Gets the filter view instance associated with this model.
• IGraphMainView View: Gets or sets the associated view interface.
• IBaseViewModel Parent: Gets or sets the parent ViewModel (checked specifically for IPSDReportMainViewModel during initialization).
• InteractionRequest<Notification> NotificationRequest: Gets the interaction request for displaying notifications.
• InteractionRequest<Confirmation> ConfirmationRequest: Gets the interaction request for displaying confirmations.
• bool IsFilterEnabled: Gets or sets a value indicating whether the filter UI is enabled (true when ChannelList has items).
• string SelectedGroupName: Gets or sets the name of the currently selected group.
• string LockedGroupName: Gets or sets the name of the currently locked group.
• List<ITestChannel> LockedChannelList: Gets or sets the list of channels currently locked by the user.
• List<ITestChannel> SelectedChannelList: Gets or sets the list of channels currently selected by the user.
• ObservableCollection<ITestChannel> ChannelList: Gets or sets the full list of available channels.
• ObservableCollection<ITestChannel> FilteredChannelList: Gets or sets the list of channels displayed after filtering.
• ObservableCollection<TreeViewChannels> TestChannelsTree: Gets or sets the hierarchical tree structure of channels displayed in the UI.
• object ContextGraphMainRegion: Gets or sets the data context for the GraphMainRegion within the view.
• string HeaderInfo: Returns the constant string "GraphRegion".
• bool TestModified: Gets or sets a flag indicating if the test has been modified.

Methods

• void Initialize(): Overrides base method. Empty implementation.
• void Initialize(object parameter): Initializes the ViewModel, sets the parent, determines if locked-only mode is required, initializes the filter view, and subscribes to events.
• void PublishSelectedChannels(): Publishes the current lists of locked and selected channels via GraphSelectedChannelsNotification and GraphSelectedChannelCountNotification.
• void OnFilterChanged(FilterParameterArgs args): Filters the ChannelList based on the string parameter provided in args, updating FilteredChannelList.
• void AddLockedGroupChannels(string testName, string groupName, List<ITestChannel> channels, bool isLocked): Adds or removes a group of channels to/from the LockedChannelList.
• void AddLockedChannel(ITestChannel channel, bool isLocked): Adds or removes a single channel to/from the LockedChannelList.
• void AddSelectedGroupChannels(string groupName, List<ITestChannel> channels): Selects a specific group of channels, resetting previous selections.
• void AddSelectedGroup(TestGroup group): Marks a specific TestGroup as selected.
• void AddSelectedChannel(ITestChannel channel, bool reset):