Call selection of row, column or table when on edges of the table

[velara3]

Currently the cursor changes when it's near the edge of the table. When the cursor has been changed then when the user clicks the mouse the event related to the current selection cursor should be executed. For example, if the user is at the left edge of the table the cursor will change to a row selection cursor. If the user clicks or holds the mouse button down in this case the whole row should be selected. If the cursor is above the table the column should be selected.

Steps to reproduce

1. Open Table Explorer
2. Click Add Editable Table
3. Position mouse to the left of the table about the middle row
4. The mouse cursor should change to a horizontal arrow (currently there is a related bug where the mouse cursor doesn't always change)
5. Click or hold down the mouse

Expected results
The row should be selected. All the cells with rowIndex == to the row are selected.

Actual result
Nothing at this time