Split a multi polygon

We are unable to split a multi polygon (like at all).

The split tool works against the currently selected features and we do not have a way to indicate which polygons ( something like sub-selection? to carve off out of the geometry collection.

Quick

Create Explode Operation available by right clicking on a selected polygon. Would break the polygon into its component parts. The merge tool would then be used to group polygons back into their intended features.

Better

Change split tool to be responsible for refining split (see UDIG-1908).

• Tool is used to split existing polygon into two parts: each result is shown split with two different colours
• Multi-polygons are already considered to be "in parts"
• Tool can be used to click on a part to cycle which colour it is shown in

Actual split is performed after reviewing in split view (from UDIG-1906) allowing users to review the intended effect of a split prior to running. If a feature has any parts (either by split or multi-geometry) they are listed as a child in a tree display.