DP44/enriched-qwen3-coder-next/Common/DTS.CommonCore/Interface/ViewData.md

source_files, generated_at, model, schema_version, sha256

source_files	generated_at	model	schema_version	sha256
Common/DTS.CommonCore/Interface/ViewData/IViewDataView.cs Common/DTS.CommonCore/Interface/ViewData/IViewDataViewModel.cs	2026-04-16T02:19:02.978313+00:00	Qwen/Qwen3-Coder-Next-FP8	1	820bab209e8d1b8f

ViewData

1. Purpose

This module defines foundational interfaces for a view-layer architecture in the DTS.CommonCore library, specifically for implementing the View Data pattern (likely part of a broader MVVM or similar separation of concerns). The IViewDataView and IViewDataViewModel interfaces serve as marker interfaces that extend base view and view model contracts (IBaseView, IBaseViewModel), enabling type-safe binding and dependency injection of view-related components while preserving abstraction and decoupling between UI presentation and business logic layers.

2. Public Interface

No public functions, properties, or methods are defined directly in these interfaces. They are empty (marker) interfaces. Their sole purpose is to establish type identity and inheritance relationships.

• interface IViewDataView : IBaseView
  A marker interface for views that expose or consume view data (e.g., data-bound UI elements). It inherits from IBaseView, implying it adheres to the base view contract (e.g., lifecycle, initialization, or rendering semantics defined elsewhere).

• interface IViewDataViewModel : IBaseViewModel
  A marker interface for view models that provide view data (e.g., state, commands, or data structures consumed by IViewDataView). It inherits from IBaseViewModel, implying it conforms to the base view model contract (e.g., data binding support, state management, or notification patterns defined elsewhere).

3. Invariants

• IViewDataView must be implemented by types that also satisfy IBaseView.
• IViewDataViewModel must be implemented by types that also satisfy IBaseViewModel.
• No additional behavioral invariants are specified beyond inheritance; the interfaces themselves impose no runtime constraints.

4. Dependencies

• Depends on:

  • DTS.Common.Base.IBaseView (via IViewDataView)
  • DTS.Common.Base.IBaseViewModel (via IViewDataViewModel)
  • DTS.Common.Base namespace (implicit dependency on the DTS.Common.Base assembly/module)

• Depended on by:

  • Not determinable from source alone. Likely used elsewhere in the codebase (e.g., in DI registrations, view/view model factories, or binding infrastructure) to constrain generic parameters (e.g., TView : IViewDataView, TViewModel : IViewDataViewModel) or enforce architectural rules.

5. Gotchas

• Ambiguity of purpose: The term “View Data” is not defined in the source. Its semantic distinction from other view/view model types (e.g., IBaseView vs. IViewDataView) is unclear without additional context (e.g., documentation or usage examples).
• No API surface: Since these are marker interfaces, developers may mistakenly expect methods/properties—ensure they are used only for type checking (is, as, generic constraints) or DI registration, not behavior invocation.
• Potential naming overlap: If other modules define similarly named interfaces (e.g., IViewData), confusion may arise; verify naming consistency across the codebase.
• No versioning or deprecation hints: No attributes (e.g., [Obsolete]) or version comments are present; assume stability but verify usage in consuming code for compatibility.
• None identified from source alone.