25 lines
1.0 KiB
Markdown
25 lines
1.0 KiB
Markdown
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# 0020. A single ViewModel split into partial classes by feature
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- **Status:** Accepted
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- **Area:** UI
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- **Recorded:** 2026-11-03 (retroactive: reconstructed from code, comments and changelog)
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## Context
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The UI is one `MainView` with many overlays sharing wallet, sync and connection state; many small ViewModels would need heavy cross-wiring.
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## Decision
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Use one `MainWindowViewModel` (CommunityToolkit.Mvvm: `[ObservableProperty]`, `[RelayCommand]`) that drives `Core` directly, split into partial classes by feature (`.Send`, `.Receive`, `.Sync`, `.Settings`, `.Wizard`, `.Contacts`, `.Update`, `.WalletInfo`, `.Donate`). New feature logic goes into the matching partial or a new one.
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## Consequences
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- Shared state needs no messaging layer.
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- The class is large; discipline on partial boundaries is what keeps it navigable.
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- Heavy network work must run off the UI thread (`Task.Run`).
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## References
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- `src/App/ViewModels/MainWindowViewModel.cs`
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- `src/App/ViewModels/MainWindowViewModel.Send.cs`
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- `src/App/ViewModels/MainWindowViewModel.Sync.cs`
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