DataFilter.PlatformShared 1.1.0

DataFilter.PlatformShared

Shared view-model logic for DataFilter UI specializations (WinForms, MAUI, WinUI 3, Uno/UWP XAML).

Localization

All popup UI stacks should source their user-facing strings (buttons, section headers, operator names, etc.) from DataFilter.Localization.LocalizationManager so language switching works at runtime.

Per-grid culture override

IFilterableDataGridViewModel exposes:

• CultureInfo? CultureOverride: optional UI override culture used by integrations when showing popups.

FilterableDataGridViewModel provides constructors:

• new FilterableDataGridViewModel(CultureInfo? cultureOverride)
• new FilterableDataGridViewModel<T>(CultureInfo? cultureOverride)

Filter pipeline integration

IFilterableDataGridViewModel (implemented by FilterableDataGridViewModel and WPF’s CollectionViewFilterAdapter) includes:

• Task ApplyFilterPipelineAsync(FilterPipeline pipeline) — compiles the pipeline, calls FilterContext.ReplaceDescriptors, resets page to 1, and refreshes data. Use this after loading a preset from JSON or editing the pipeline in your UI.
• FilterPipeline CreatePipelineFromCurrentSnapshot() — builds a mutable FilterPipeline from the current filters via FilterPipelineInterop.FromLegacySnapshot(ExtractSnapshot()), suitable for displaying or serializing the active state.

Excel-style column filters continue to use ApplyColumnFilter / ClearColumnFilter (AddOrUpdateDescriptor under the hood). Mixing both approaches is possible but you should treat one path as the source of truth for a given screen, or sync explicitly.

FilterableDataGridViewModel and column popup sync

• IFilterableDataGridViewModel.FilterDescriptorsChanged: Raised when the pipeline is applied/restored, when a column is cleared, and—on the local data path—when LocalDataSource reference changes after RefreshDataAsync (so column headers can refetch distinct values and LoadStateAsync into the popup).
• RefreshDataAsync: Reconciles ExcelFilterDescriptor.State.SelectedValues against distincts from the current source, then applies filters. Assign a new LocalDataSource then call RefreshDataAsync so reconciliation and the event above run in order.
• ColumnFilterViewModel: Applies ExcelFilterSelectionReconciler in InitializeAsync with dropSelectionsNotInDistinct: false to preserve selections not in the current narrow distinct list. LoadStateAsync restores list selection or, for custom filters, UpdateSelectionFromCustomFilter (including all stacked AdditionalCustomCriteria) so the popup matches ExcelFilterDescriptor. For persistence, the Excel-like state can also express OR-combined search intent (OrSearchPatterns, OrSelectedValues) to avoid materializing In(list) when reapplying presets on evolving data.