Support for drag and drop just made it into the RAP source code repository. You can use the same API as known from SWT and thus re-use even more code when single-sourcing RCP applications.
It will be available in the M4 build. In the meanwhile you can check out the sources from CVS and explore the new functionality online (go to the List page).

There are still some things left to do, for more details see this bug. We would be very happy to gain feedback about how your existing drag and drop code works on RAP. In case something doesn’t work as expected, please drop us a line or open a bug.
Tags: eclipse, eclipse rap, rap, Single Sourcing, swt
I am very pleased to see that the first code arrived in the RAP incubator project. The contribution consists of the very early steps towards a spread sheet component.

It is still in the proof of concept phase. The goal so far was to find out whether a spread sheet that is composed of existing widgets could work with regard to performance and usability. This seems to work out rather well. As a consequence of composing the spread sheet of existing widgets the same code runs on SWT as well.
In case you whish to play around with it or even contribute, the source code can be obtained from CVS and resides in the incubator/spreadsheet module.
Tags: eclipse rap, rap, Single Sourcing, swt