48 lines
3.9 KiB
Markdown
48 lines
3.9 KiB
Markdown
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---
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source_files:
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- Common/DTS.CommonCore/Interface/DownloadData/IDownloadDataView.cs
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- Common/DTS.CommonCore/Interface/DownloadData/IDownloadDataViewModel.cs
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generated_at: "2026-04-16T02:22:52.860963+00:00"
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model: "Qwen/Qwen3-Coder-Next-FP8"
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schema_version: 1
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sha256: "3467185c7a4c208b"
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---
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# DownloadData
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## 1. Purpose
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This module defines the core view and view model interfaces for the download data feature within the DTS (Data Transfer System) architecture. It establishes the contract between the UI layer (`IDownloadDataView`) and the presentation logic layer (`IDownloadDataViewModel`) by inheriting from the base view and view model interfaces (`IBaseView`, `IBaseViewModel`). Its role is to provide a standardized, extensible foundation for implementing download data functionality—though the interfaces themselves are currently empty, indicating they are placeholders for future feature-specific members or intended to be used in conjunction with generic UI patterns.
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## 2. Public Interface
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No public functions, properties, or events are defined in these interfaces beyond those inherited from their base interfaces.
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- **`IDownloadDataView`**
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- *Signature*: `public interface IDownloadDataView : IBaseView`
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- *Behavior*: Serves as the contract for the view component in the download data feature. Inherits from `IBaseView` (defined in `DTS.Common.Base`), which presumably defines standard view lifecycle or binding behavior (e.g., `DataContext`, `Initialize()`, or similar—though specifics are not visible here).
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- **`IDownloadDataViewModel`**
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- *Signature*: `public interface IDownloadDataViewModel : IBaseViewModel`
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- *Behavior*: Serves as the contract for the view model component in the download data feature. Inherits from `IBaseViewModel` (defined in `DTS.Common.Base`), which likely defines standard view model responsibilities (e.g., `OnPropertyChanged`, `ExecuteCommand`, or data state management—though specifics are not visible here).
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## 3. Invariants
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- `IDownloadDataView` must be implemented by a class that satisfies the contract of `IBaseView`.
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- `IDownloadDataViewModel` must be implemented by a class that satisfies the contract of `IBaseViewModel`.
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- No additional validation rules, state constraints, or ordering guarantees are specified in the source.
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- The interfaces are *marker interfaces*—they carry no explicit behavior, so invariants are limited to type hierarchy compliance.
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## 4. Dependencies
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- **Depends on**:
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- `DTS.Common.Base.IBaseView` (via `IDownloadDataView`)
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- `DTS.Common.Base.IBaseViewModel` (via `IDownloadDataViewModel`)
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- The `DTS.Common.Base` namespace/module (not shown in source; assumed to be a core shared library).
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- **Depended on by**:
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- Unknown from source alone. Likely consumed by concrete implementations (e.g., `DownloadDataView : IDownloadDataView`, `DownloadDataViewModel : IDownloadDataViewModel`) and potentially by DI containers, UI frameworks (e.g., MVVM frameworks), or navigation/routing logic.
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- No direct usages are visible in the provided files.
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## 5. Gotchas
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- **Empty interfaces**: Both interfaces are currently empty. Developers may incorrectly assume they define behavior; in reality, all functionality must come from `IBaseView`/`IBaseViewModel` or future extensions.
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- **Namespace inconsistency**: `IDownloadDataView` resides in `DTS.Common.Interface`, while `IDownloadDataViewModel` resides in `DTS.Common`. This may cause confusion about intended layering or module boundaries.
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- **No versioning or deprecation markers**: No attributes or comments indicate whether these interfaces are stable, experimental, or deprecated.
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- **No documentation comments**: XML documentation is absent, making it harder to infer intended usage beyond naming.
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- **None identified from source alone.** (Note: The above points are *inferred* from structural observations, not explicit source behavior.)
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