Abstract A signal emitted when the data model has changed.
Abstract columnGet the column count for a region in the data model.
The column region of interest.
This method is called often, and so should be efficient.
Abstract dataGet the data value for a cell in the data model.
The cell region of interest.
The row index of the cell of interest.
The column index of the cell of interest.
The data value for the specified cell.
The returned data should be treated as immutable.
This method is called often, and so should be efficient.
Protected emitEmit the changed signal for the data model.
Subclasses should call this method whenever the data model has changed so that attached data grids can update themselves.
Get the merged cell group corresponding to a region and index number.
the cell region of cell group.
the group index of the cell group.
a cell group.
Get the count of merged cell groups pertaining to a given cell region.
the target cell region.
Get the metadata for a cell in the data model.
The cell region of interest.
The row index of the cell of interest.
The column index of the cell of interest.
The metadata for the specified cell.
The returned metadata should be treated as immutable.
This method is called often, and so should be efficient.
The default implementation returns {}.
Abstract rowAbstract setSet the data value for a cell in the data model.
The cell region of interest.
The row index of the cell of interest.
The column index of the cell of interest.
true if succeeds, false otherwise.
An object which provides the mutable data for a data grid.
Notes
This object is an extension to
DataModeland it only adds ability to change data for cells.