Module pivot_melt_modal 

Pivot & Melt builder state: a form of rows, each edited through one Picker scoped to that row alone, and the live preview of the spec it stages. The spec is echoed live; Enter applies it.

Structs

MeltSpec

Spec for melt operation.

PivotMeltModal

PivotSpec

Spec for pivot operation.

PreviewFrame

What a preview found: the first rows of the result, and its shape.

PreviewInput

The head of the view the preview runs over.

ReshapePreview

The builder’s live preview: the head it runs over, the request in flight, and the last answer. Requests are numbered; one runs at a time, and an edit made while it runs is previewed when it ends, so typing never piles up workers.

ReshapeSource

What a pivot or melt ran over: the query, filters and sort in effect when it was applied. A view replays these before the reshape.

Enums

MeltTypeFilter

Type filter for Melt “by type”.

MeltValueStrategy

Melt value-column strategy.

PivotAggregation

Aggregation for pivot value column.

PivotMeltFocus

Focus: the tab bar, or one row of the active tab’s form.

PivotMeltTab

PreviewSpec

A staged reshape the preview runs: what Enter would apply.

Constants

PREVIEW_INPUT_ROWS

Rows of the view the preview reshapes. Small enough that every edit reruns it at once; the head is read once per opening of the builder.

PREVIEW_ROWS

Rows of the result the preview keeps to draw.

PREVIEW_WIDE_PIVOT

New columns past which the preview warns that a pivot is wide.

Functions

run_preview

spec run over input, in memory: the preview’s worker.