105 lines
6.7 KiB
Markdown
105 lines
6.7 KiB
Markdown
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---
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source_files:
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- DataPRO/Modules/RegionOfInterest/RegionOfInterestChannels/RegionOfInterestChannelsModule.cs
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generated_at: "2026-04-16T04:33:45.724018+00:00"
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model: "Qwen/Qwen3-Coder-Next-FP8"
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schema_version: 1
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sha256: "50e1f1160782bccc"
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---
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# RegionOfInterestChannels
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## Documentation: RegionOfInterestChannelsModule
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---
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### 1. Purpose
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The `RegionOfInterestChannelsModule` is a Prism-based modular component responsible for registering the view and view model for the *Region of Interest Channels* UI section within the application. It integrates with the Unity dependency injection container to expose `IRegionOfInterestChannelsView` and `IRegionOfInterestChannelsViewModel` as singleton services, enabling their reuse and injection elsewhere in the UI. This module serves as the entry point for the ROI Channels functionality—likely a UI area where users configure or inspect channel-specific regions of interest in imaging or data analysis workflows.
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---
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### 2. Public Interface
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#### `RegionOfInterestChannelsModule` class
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- **`RegionOfInterestChannelsModule(Unity.IUnityContainer unityContainer)`**
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Constructor. Accepts a Unity container via dependency injection and stores it for later use in type registration.
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- **`void Initialize()`**
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Registers two types as singletons in the Unity container:
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- `IRegionOfInterestChannelsView` → `RegionOfInterestChannelsView`
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- `IRegionOfInterestChannelsViewModel` → `RegionOfInterestChannelsViewModel`
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This method is called by both `OnInitialized` and `RegisterTypes`.
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- **`void OnInitialized(IContainerProvider containerProvider)`**
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Currently empty; no initialization logic beyond what `Initialize()` provides.
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- **`void RegisterTypes(IContainerRegistry containerRegistry)`**
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Delegates to `Initialize()`; used by Prism’s module initialization pipeline.
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#### `RegionOfInterestChannelsModuleNameAttribute` class
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- **`RegionOfInterestChannelsModuleNameAttribute()` / `RegionOfInterestChannelsModuleNameAttribute(string)`**
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Constructor. Sets `AssemblyName` to `AssemblyNames.RegionOfInterestChannels.ToString()`.
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- **`override string AssemblyName { get; }`**
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Returns `"RegionOfInterestChannels"` (value of `AssemblyNames.RegionOfInterestChannels`).
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- **`override Type GetAttributeType()`**
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Returns `typeof(TextAttribute)`.
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- **`override string GetAssemblyName()`**
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Returns `AssemblyName`.
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#### `RegionOfInterestChannelsModuleImageAttribute` class
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- **`RegionOfInterestChannelsModuleImageAttribute()` / `RegionOfInterestChannelsModuleImageAttribute(string)`**
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Constructor. Loads the assembly image via `AssemblyInfo.GetImage("RegionOfInterestChannels")`.
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- **`override BitmapImage AssemblyImage { get; }`**
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Returns the loaded image (cached in `_img`).
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- **`override string AssemblyName { get; }`**
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Returns `"RegionOfInterestChannels"`.
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- **`override string AssemblyGroup { get; }`**
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Returns `"Prepare"` (value of `eAssemblyGroups.Prepare`).
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- **`override eAssemblyRegion AssemblyRegion { get; }`**
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Returns `eAssemblyRegion.RegionOfInterestChannelsRegion`.
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- **`override Type GetAttributeType()`**
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Returns `typeof(ImageAttribute)`.
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- **`override BitmapImage GetAssemblyImage()`**
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Returns `AssemblyImage`.
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- **`override string GetAssemblyName()`**
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Returns `AssemblyName`.
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- **`override string GetAssemblyGroup()`**
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Returns `AssemblyGroup`.
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- **`override eAssemblyRegion GetAssemblyRegion()`**
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Returns `AssemblyRegion`.
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> **Note**: The types `IRegionOfInterestChannelsView`, `IRegionOfInterestChannelsViewModel`, `AssemblyNames`, `AssemblyInfo`, `eAssemblyGroups`, and `eAssemblyRegion` are referenced but *not defined* in this file. Their definitions must be found in other modules or shared libraries (e.g., `DTS.Common`, `RegionOfInterestChannels` namespace).
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---
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### 3. Invariants
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- The Unity container (`_unityContainer`) is non-null after construction (enforced by DI framework).
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- `IRegionOfInterestChannelsView` and `IRegionOfInterestChannelsViewModel` are registered exactly once as singletons per module load.
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- `AssemblyName` for both attributes is consistently `"RegionOfInterestChannels"`.
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- `AssemblyGroup` is always `"Prepare"`.
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- `AssemblyRegion` is always `eAssemblyRegion.RegionOfInterestChannelsRegion`.
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- Image loading via `AssemblyInfo.GetImage(...)` must succeed (or throw); no fallback or null-check is visible in this module.
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---
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### 4. Dependencies
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#### This module depends on:
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- **Prism.Modularity** (`IModule`, `IContainerRegistry`, `IContainerProvider`)
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- **Unity** (`Unity.IUnityContainer`, `IContainerRegistry`)
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- **WPF** (`System.Windows.Media.Imaging.BitmapImage`)
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- **DTS.Common** (`AssemblyNames`, `AssemblyInfo`, `eAssemblyGroups`, `eAssemblyRegion`)
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- **DTS.Common.Interface.RegionOfInterest.RegionOfInterestChannels** (`IRegionOfInterestChannelsView`, `IRegionOfInterestChannelsViewModel`)
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- **Prism.Ioc** (`IContainerProvider`, `IContainerRegistry`)
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#### This module is depended upon by:
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- The Prism bootstrapper/module catalog system (via `[Export(typeof(IModule))]` and `[Module(...)]`).
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- UI components that resolve `IRegionOfInterestChannelsView` or `IRegionOfInterestChannelsViewModel` via Unity.
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- The main UI (likely `SummaryModule` or equivalent) that uses `RegionOfInterestChannelsModuleImageAttribute` to display the module’s icon and group in the assembly list.
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---
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### 5. Gotchas
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- **`OnInitialized` is empty**: Though Prism’s module lifecycle calls `OnInitialized` *after* `RegisterTypes`, this module performs all registration in `Initialize()` (called from `RegisterTypes`). This may be intentional but could confuse developers expecting initialization logic in `OnInitialized`.
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- **Redundant `Initialize()` calls**: `Initialize()` is invoked both directly and via `RegisterTypes`, but Unity’s singleton registration is idempotent—no harm, but potentially misleading.
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- **Image loading side effects**: `AssemblyInfo.GetImage(...)` is called in both constructors and property getters; if `GetImage` is expensive or has side effects (e.g., disk I/O), repeated access (e.g., via `AssemblyImage` getter) may be inefficient despite `_img` caching.
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- **Missing type definitions**: Core interfaces (`IRegionOfInterestChannelsView`, `IRegionOfInterestChannelsViewModel`) and enums (`eAssemblyRegion`, `eAssemblyGroups`) are not defined here. Their contracts and behavior are unknown from this file alone.
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- **No validation**: No checks ensure `AssemblyNames.RegionOfInterestChannels` is valid or that `AssemblyInfo.GetImage(...)` returns a non-null image. Failure here may cause runtime errors.
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- **Attribute reuse**: Both attributes are assembly-level and applied via `[assembly: ...]`, but their constructors accept unused `string s` parameters—likely legacy.
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