Adding observers to a group of entities

[cjthompson]

Has anyone had trouble adding observers to a group of entities?

It seems to add the observers just fine, but when I try to remove them, it only is able to remove the first entity in the group. Also, if I try remove, then add any observers, it never adds the observers.

[thomthom]

can you paste the code you use to add and remove the observers?

[cjthompson]

Here is an abridged version:

class EntityObserver
	def onChangeEntity(entity)
		puts entity.to_s + " changed"
	end
end

$entityObserver = EntityObserver.new

def addObserver
	Sketchup.active_model.selection.each{|entity| entity.add_observer($entityObserver)}
end
def removeObserver
	Sketchup.active_model.selection.each{|entity| entity.remove_observer($entityObserver)}
end

If you have one entity selected, it adds and removes fine, but if you have more than one entity selected, it only removes the first entity in the selection.