Observer question

Pout

must me the heat here but some how i'm puzzled.
I want to remove an observer.

It's added like this:
Sketchup.active_model.selection.add_observer(MySelectionObserver.new)

and here is the observer code:
class MySelectionObserver < Sketchup::SelectionObserver
def onSelectionBulkChange(selection)
#code to execute when the selection changes
end
end

Now how do i remove this observer?

Thx!

TIG

Make an enduring reference to the observer as you set it...

@@myselectionobserver=Sketchup.active_model.selection.add_observer(MySelectionObserver.new)

later on to remove it use...

Sketchup.active_model.selection.remove_observer(@@myselectionobserver)

OR if the parts of the code are not within the same class/module use a global $ BUT make sure it's a 'unique' name - like $this_is_pouts_extra_special_selection_observer so no one else's similar observer by the same name gets messed with!!!

Dan Rathbun

@tig said:

Make an enduring reference to the observer as you set it...

@@myselectionobserver=Sketchup.active_model.selection.add_observer(MySelectionObserver.new)

The API states that Selection.add_observer returns a boolean true || false indicating sucess.

perhaps:

@@myselectionobserver = MySelectionObserver.new() Sketchup.active_model.selection.add_observer(@@myselectionobserver)

TIG

Dan you are right - I rushed that off without thinking
Your way is correct - make a new observer, apply it... remove it!
` @@myselectionobserver = MySelectionObserver.new()
Sketchup.active_model.selection.add_observer(@@myselectionobserver)

Sketchup.active_model.selection.remove_observer(@@myselectionobserver)`
IS the correct way...

Pout

suberb, and this on a sunday!!!
Thx tig and dan, much appreciated!