org.apache.tapestry5.grid

## Interface GridSortModel

-     public interface GridSortModel

  Models the sorting applied to the a `GridDataSource`.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `clear()`
    `ColumnSort` | `getColumnSort(String columnId)` Identifies how (or if) a column is sorted.
    `List<SortConstraint>` | `getSortConstraints()` Returns a list of sort constraints, identifying which columns are sorted, and how.
    `void` | `updateSort(String columnId)` Updates the column sort.

- - ### Method Detail

    - #### getColumnSort

          ColumnSort getColumnSort(String columnId)

      Identifies how (or if) a column is sorted.
      Parameters:
        `columnId` -
      Returns:
        the sort for the indicated column or `ColumnSort.UNSORTED` if the column is not used for sorting

    - #### updateSort

          void updateSort(String columnId)

      Updates the column sort. The receiver determines how to handle the sort request.
      Parameters:
        `columnId` - property id of column to sort on

    - #### getSortConstraints

          List<SortConstraint> getSortConstraints()

      Returns a list of sort constraints, identifying which columns are sorted, and how. May return an empty list (but won't return null).
      See Also:
        `GridDataSource.prepare(int, int, java.util.List)`

    - #### clear

          void clear()

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