protected AddressSetView computeVisibleAddresses(List<AnchoredLayout> layouts) {
		// Kind of gross, but current component will do
		ByteViewerComponent component = getCurrentComponent();
		if (component == null || blockSet == null) {
			return new AddressSet();
		}

		BigInteger startIndex = layouts.get(0).getIndex();
		BigInteger endIndex = layouts.get(layouts.size() - 1).getIndex();
		FieldSelection fieldSel = new FieldSelection();
		fieldSel.addRange(startIndex, endIndex.add(BigInteger.ONE));
		ByteBlockSelection blockSel = component.processFieldSelection(fieldSel);
		return blockSet.getAddressSet(blockSel);
	}
Set the status info on the tool.

@param message non-html text to display
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ByteViewerPanel.java