---
source_files:
  - Common/DTS.Common/Interface/SystemSettings/PowerAndBattery/IPowerAndBatteryView.cs
  - Common/DTS.Common/Interface/SystemSettings/PowerAndBattery/IPowerAndBatteryViewModel.cs
generated_at: "2026-04-16T03:06:15.695436+00:00"
model: "Qwen/Qwen3-Coder-Next-FP8"
schema_version: 1
sha256: "d6db8777bf66b7b4"
---

# PowerAndBattery

## 1. Purpose  
This module defines the foundational interfaces for the *Power and Battery* section of the system settings UI, specifically `IPowerAndBatteryView` and `IPowerAndBatteryViewModel`. These interfaces serve as contract points in a layered architecture (likely MVVM), separating the view layer (`IPowerAndBatteryView`) from the view model layer (`IPowerAndBatteryViewModel`) to enable testability, modularity, and decoupling of UI presentation logic from business or platform-specific implementation details. They extend base interfaces (`IBaseView`, `IBaseViewModel`) to inherit common view/view-model behavior, but currently carry no additional members—suggesting this section may be under development, minimal, or rely entirely on base functionality.

## 2. Public Interface  
No public methods, properties, or events are defined directly in these interfaces. Both interfaces are *marker interfaces* extending base contracts:

- **`IPowerAndBatteryView`**  
  - *Signature:* `public interface IPowerAndBatteryView : IBaseView`  
  - *Behavior:* Serves as a typed contract for UI components (e.g., pages, controls) rendering the Power and Battery settings. Its behavior is entirely inherited from `IBaseView` (not shown here), which likely defines standard view lifecycle or binding hooks (e.g., `Initialize()`, `OnNavigatedTo()`), but this cannot be confirmed from the provided source.

- **`IPowerAndBatteryViewModel`**  
  - *Signature:* `public interface IPowerAndBatteryViewModel : IBaseViewModel`  
  - *Behavior:* Serves as a typed contract for the view model managing state and commands for Power and Battery settings. Its behavior is inherited from `IBaseViewModel` (not shown), which may include `INotifyPropertyChanged` implementation, command properties, or initialization hooks. No additional members are declared.

## 3. Invariants  
- Both interfaces are *empty* (aside from inheritance) and impose no additional constraints beyond their base contracts.  
- They must be implemented by concrete types that satisfy the contracts of `IBaseView` and `IBaseViewModel`, respectively (e.g., implementing required lifecycle methods or properties defined in those base interfaces).  
- No validation rules, ordering guarantees, or state invariants are specified or inferable from this source.

## 4. Dependencies  
- **Dependencies *of* this module:**  
  - `DTS.Common.Base` namespace (specifically `IBaseView` and `IBaseViewModel`), which are imported but not defined here.  
- **Dependencies *on* this module:**  
  - Any UI or view model implementation for the Power and Battery settings section (e.g., a `PowerAndBatteryPage` class implementing `IPowerAndBatteryView`, or a `PowerAndBatteryViewModel` class implementing `IPowerAndBatteryViewModel`).  
  - Dependency injection or composition logic that resolves `IPowerAndBatteryView`/`IPowerAndBatteryViewModel` to concrete types.  
- No other modules or namespaces are referenced beyond `DTS.Common.Base`.

## 5. Gotchas  
- **Ambiguity of base interface behavior:** Since `IBaseView` and `IBaseViewModel` are not provided, the actual capabilities (e.g., data binding support, lifecycle events) of `IPowerAndBatteryView` and `IPowerAndBatteryViewModel` are unknown. Developers must consult their definitions in `DTS.Common.Base`.  
- **No domain-specific contract:** The interfaces currently convey *only* semantic categorization ("Power and Battery settings"), with no indication of required features (e.g., battery level display, power plan selection, sleep settings). This may lead to inconsistent implementations if consumers assume additional functionality.  
- **Potential for future expansion:** The minimal design suggests this is a placeholder. Future changes may add members, risking breaking changes for existing implementations unless versioning or extensibility patterns (e.g., optional interface implementation) are used.  
- **None identified from source alone.**