Added #

grid_ui

• fillWidth — GridDataTable and FlutterGrid now accept fillWidth: bool (default false). When true the table stretches to fill available horizontal space; when columns are wider than the viewport the table still scrolls.
• Column span headers — GridHeaderRow now renders group headers correctly: width is computed as the sum of colSpan consecutive visible columns. Hidden leaf-column headers are skipped automatically.
• Hover row — GridDataRow highlights the hovered row using GridThemeData.hoverRowBackground. Selection always takes priority.
• Animated insert / remove — GridDataTable is now a StatefulWidget backed by AnimatedList. Single-row insertions and deletions animate with a SizeTransition + FadeTransition. Bulk changes (sort, filter, page) reset instantly without animation.
• Semantics — GridDataRow and GridHeaderRow cells are wrapped in Semantics nodes with label, selected, and button properties.
• Haptic feedback — GridDataRow and FlutterGrid accept enableHapticFeedback: bool (default false). When true, HapticFeedback.lightImpact() fires the moment a row transitions to selected.

grid_core

• ColumnDef, GridController, GridThemeData — dartdoc comments added to all public APIs.

grid_export (new package)

• GridExporter<T> — converts any GridController to CSV.
  • toCsv({includeHeaders, columnIds, allRows}) — returns a String.
  • copyToClipboard(...) — writes CSV to the system clipboard and returns the string. Uses flutter/services.dart — no extra dependencies.
  • Configurable delimiter (default ,) and quote (default ").
  • Proper RFC 4180 quoting for values containing the delimiter, quotes, or line-breaks.

GridThemeData

• hoverRowBackground — color applied when the pointer is over a row. GridThemeData.fromTheme derives it from onSurface at 4 % opacity.

Changed #

• GridHeaderRow now requires a visibleColumns parameter (was implicit). GridDataTable passes table.visibleColumns automatically.
• GridDataRow is now a StatefulWidget (was StatelessWidget). Existing usages are unaffected.

Example app #

• Complete rewrite of flutter_grid_example with five screens:
  • Basic — full table with sort, filter, column visibility, pagination.
  • Selection — multi-row select, bulk action bar, haptic feedback.
  • Animated — live insert / remove demo.
  • Export — CSV preview and clipboard copy via grid_export.
  • Features — column pinning, custom cells, dark custom theme.

• grid_core: headless pipeline, sort, filter, pagination, grouping, selection, column pinning/ordering/sizing/visibility, row pinning, expand, undo/redo.
• grid_flutter: GridBuilder, MemoryDataSource, RestDataSource, StreamDataSource, PersistenceMiddleware.
• grid_ui: FlutterGrid, GridDataTable, GridHeaderRow, GridDataRow, built-in cell renderers (text, number, money, date, boolean, badge, avatar, progress, link), skeleton loading, toolbar, filter bar, pagination, bulk action bar, column chooser, context menu, swipe row actions.