tessera_flutter 0.2.4

Flutter widgets for the tessera pivot-table engine: an expandable cube grid, axis and aggregate editors, and localizations for fourteen languages.

0.2.4

• Computed dimensions in the dimension picker: with facts given, showDimensionPicker / DimensionPickerDialog pin an "Expression…" entry under the list, which swaps the list for an expression field (validated as the user types, any result type), a label field and an add button, and returns an ExpressionDimension — `floor(year / 10)
  • 10groups years into decades,rating >= 8splits by a condition.AxisEditorpasses the cube's facts, so its+offers the entry; its newfunctions` parameter adds functions the expressions may call. No new strings: "Expression", "Label", "Add dimension" and "already in use" were there in every language.

0.2.3

• The dimension picker, the aggregate picker and the filter editor's value list are usable on a phone in landscape. On a screen shorter than 480 dp they open full screen — title and search field (or the function dropdown) in the bar, the list below — and no longer open the keyboard by themselves, which left the list no room; dragging the list closes the keyboard. Taller screens keep the dialogs as they were.

0.2.2

• The menus of CubeView (dimension titles), AxisEditor (the caption), AggregateEditor (the chips' "Show values as") and the filter editor close on the system back (Android's back button or gesture, the browser's back) instead of leaving it to pop the page, sheet or dialog under them. A page with PopScope(canPop: false) still claims that back first; let it through with canPop: ModalRoute.of(context)!.willHandlePopInternally.
• Example app: the export menu's "Facts as a table" submenu writes the facts passing the cube's filter as a filterable .xlsx or .ods sheet, CSV or JSON Lines (ExportTable.ofFacts and the table exporters).

0.2.1

• Example app: JSON and JSON Lines in the export menu.
• Example app: a "Charts" page — a live chart beside the grid (below it on a tall screen) drawn with fl_chart from the engine's ChartData / ScatterData: bar, stacked, line (time / numeric / categorical X axis from the typed category values), pie and scatter, from the layout as displayed, from the facts, or from the current cell's drill-down (dimensions the cell pins are disabled); per-fact scatter of the cell's rows. CubeWorkbench.companion places a pane next to the view; --dart-define=EXAMPLE=<title> opens an example directly.

0.2.0

Requires tessera 0.2.0 (the expression language, statistical and layout-relative aggregates, structured filters, JSON and snapshots).

• FilterEditor, FilterEditorDialog, showFilterEditor and FilterEditorResult / FilterEditorValue: a filter editor with all-of / any-of / not groups, typed condition rows (including "is one of" from the column's distinct values and a date picker), expression rows with live validation and read-only rows for filters without an editable form.
• ExpressionField (with ExpressionTextController, which underlines the error range): an expression text field validated on every keystroke, the message in the current language; no message while the field is still empty.
• Aggregate picker: a "Formula" function for cell formulas (Aggregate.expression) and an "Expression…" entry under every measure function for calculated measures (Measure.expression), each with a label field; the new statistical kinds; AggregatePickerDialog.facts / functions, showAggregatePicker(functions:), AggregateEditor.functions. The function dropdown expands to the dialog width and ellipsizes long names.
• AggregateEditor: a long press or secondary click on a chip opens "Show values as" with the ValueDisplay choices; the wrapped aggregate replaces the chip in the spec, in sorts and in the selection.
• AxisSide now comes from the engine (re-exported, no import change).
• Example app: a "Filter…" action, the active filter shown under the grid, "records" instead of "facts" in the status line.

0.1.1

• README: the status note no longer says the package is unpublished.

0.1.0

• CubeView shows several aggregates side by side — one value column per aggregate under each column entry, the same layout the exporters write. aggregate became aggregates (null = all of the spec's); AggregateEditor.selected is a set with onSelectedChanged; CellAddress.aggregate names the value column of the current cell.

• Initial release: CubeView, CubeController, AxisEditor, AggregateEditor, the dimension and aggregate picker dialogs, CubeTheme and TesseraLocalizations.

• CubeView: a menu on every dimension title (▾ button, long press or secondary click) with the sort direction and "expand all" / "collapse all" for that level; confirmLevelExpansion guards large ones. CubeController.expandRowLevel and friends.

• CubeView: sorting by a column's aggregate sets the first row level and lets the others inherit; a deeper level's title cycles through the opposite direction, the same direction and inheriting, and its menu has "same order as the level above".

• Column widths are measured with the theme's text styles merged onto the ambient DefaultTextStyle, as Text renders them, so styles without a font family or size no longer produce truncated columns.

• AxisEditor: the caption ("Rows" / "Columns") opens a menu with the axis's summary position (end / start / hidden) and subtotal position (above / below / hidden).

• CubeTheme.headerIconColor: header icons default to the header text colour instead of the ambient icon colour.

• Current cell: CubeController.selection / currentCell, CellAddress; CubeView.selectable, focusNode, autofocus, keyboard navigation and CubeTheme.selectionColor.

• CubeView: a data cell's level (for CubeTheme.levelColor) is the sum of its row and column depths, not the maximum.

• CubeTheme.levelColor takes a CellLevel (row and column depth separately, depth = their sum); headerLevelColor colours headers per level (HeaderLevel); hueLevels: HueLevels() colours levels by hue alone — cells by their row level, headers the same hue with more chroma, the first hue from the app's primary colour, light and dark defaults from the brightness, summaries neutral.