Working on a run-time config menu for advanced data grids, this menu will need to include:

• A hierarchical display of columns and a way to edit them since some columns will have multiple sub-columns and why stop there
• A way to ‘roll-up’ data based on one or more columns, this will give the appearance of rows having children rows even though the data will be flat

Started working on the first bullet with a tree / datagrid hybrid:

• Have a tree / datagrid list with existing columns in it and editable headerText fields
• Had a list of available columns and was planning on dragging / dropping from it but after lots of messing around it is apparently not easy to drag and drop from a list of flat data to a list of hierachical data
• decided to simply go with DropDownList and add/remove buttons

Did a quick example of Java to Java AMF as well as did some reading on Deep Linking in flex.