Make the tooltip scrollable

[opcoach]

In some cases, the sample displayed in the tooltip (when the list of files is displayed in the second dialog) is very long (especially for factories), and it is not possible to scroll inside.

Would be great to make the tooltip scrollable

[opcoach]

This can help ?

https://stackoverflow.com/questions/16776663/how-to-get-exactly-eclipse-editor-kind-of-tool-tip-in-rcp-swt-table-cell