java - Show Column Header on dragging column

Question

i implement the code in GroupableHeader and try to enable the reordering allowed but i have two problems:

1: When dragging a column the header don′t see over the column
2: How restrict the dragged area of the column to prevent the column exit of the columnGroup

I don′t understand why the header don′t see on column dragging, i read the table header api but did not find any solution. Any ideas for solving these problems?

Answer 1

My predecessor also thought that using code they copied off the internet was a good idea...fortunately for my company, I don't

I spent about 4 weeks of my spare time digging through the implementation and comparing it with the default BasicTableHeaderUI figuring out how to reinstate...

• Column ordering, including, limiting the grouped columns to there group
• Row sorting
• Various other bits and pieces

This is a incomplete solution, as I've not yet quite got to the point where when you drag a group and have it show all the columns in the group, but that's within the TableUI

Unfortunately, I can't paste the code, it's over the 3000 character limit, but you can grab a copy from here