From the API docs;
In Flake a shape being selected will cause the tool manager to make available
all tools that can edit the selected shapes.  In some cases selecting one
shape should allow the tool to edit a related shape be available too.  The
tool delegates allows this to happen by taking all the shapes in the set
into account on tool selection.

This is step one to fix headers/footers in KWord properly.
This is inspired by the needs for things like text-on-shape and caption-shape

svn path=/trunk/koffice/; revision=1096387