How to hide and unhide rows from a click in the cell.

I want to be able to double click on any cell in column ‘A’ and if there is a value in the cell, it checks for blanks below it and hides the following blank rows until it finds another cell that has a value in it. Than if double clicked in the same cell, it unhide the hidden rows. For example if I double click on A1, nothing happens but if I double click on A3, it hides rows 4 to 20 because the next cell in column ‘A’ that has value in it is row 21. Then if I double click A3 again, it unhide it. This same logic applies to column ‘B’ and ‘C” and so on. It can go up to 7 columns deep.



Any help with this would be greatly appreciated.