DefinitionObserver doesn't trigger

thomthom

I made an DefinitionObserver where I added some puts statement for the onComponentInstanceAdded and onComponentInstanceRemoved events.
I then attach it to the definition I want to observe. But they never trigger. Is it that the event name is different from what the manual claims? Or must there be something else I've done wrong?

remus

I dont think so...

p.s. its 'lose' not 'loose'

thomthom

I think we did. I bumped this thread earlier. And I posted a post in this thread right after Scott's post: http://www.sketchucation.com/forums/scf/viewtopic.php?f=180&t=17047&st=0&sk=t&sd=a&start=30#p141244
which also is gone.

remus

I'll investigate

Gaieus

Hm. I don't know about anything. I'll also see...
(Thanks Remus for warning )

Edit: well, I had a look at both the moderator log and the admin log and there are no traces of posts having been deleted from here or a system backup (which would also explain it although I should definitely know about that).

I don't know, Thom.

And yes, it's "lose" (as a verb). "Loose" would be an adjective meaning something is not tight.

thomthom

There was a time at around 16:00 GMT+1 that the forum returned PHP errors on and off for about half an hour.

thomthom

Did we lose some posts?

[Edit: Spelling correction. ]

Gaieus

Did you post what's lost then? Or4 do you suspect then something happened that "deleted" the posts?

Actually I was online at around then (maybe doing something else that checking the forums)

thomthom

Could be. I've had SCU on my second monitor all day. it might in fact be anywhere between 15:00-17:00 GMT. I'm not 100% about the time. but it was a 30 min gap when SCF would return errors. The missing posts might have been done at that time, but I'm not sure here either. It's quite plausible. There was no error when I posted, when the forum redirected back to my post I could see it. So the errors I saw might have been SCF resetting or something...
Oh well. Nothing major was lost anyway.

remus

I left my browser on SCF for a while and it had an error when i came back, so im guessing it was the same thing you saw thomthom.

If i remember correctly it was a mysql error of some description.

thomthom

@remus said:

If i remember correctly it was a mysql error of some description.

Yes. I didn't pay too much attention to what it specifically said.
When I followed a link to the Tutorial pages I was faced with a messages saying SCF was down for half and hour due to scheduled maintenance.

thomthom

But... has anyone any answers to my original question...?

Jim

No good answer. I was able to get onComponentInstanceRemoved to fire when I removed all instances from the model, then selected Purge from the Component Browser.

Couldn't get onComponentInstanceAdded to fire.

thomthom

hmm... sounds like it reacted to the definition being removed instead of the instance... wonder if this observers is buggered...

Work around is to use ModelObserver to detect when instances are placed. Though with the overhead of observing all components... And there's no alternative to when a instance is removed other than the Entity observer. But the entity returned for the erase even returns an instance with .definition returning nil and all attribute dictionaries are gone...

thomthom

I really need to make this observer work now. the model.onPlaceComponent only triggers when you take a component from the component browser and place it in the model. But it doesn't trigger when you do a move+copy of an existing component.

Anyone?

thomthom

I looks like it's some wires crossed in the backend. I made a typo when I wanted a DefinitionsObserver, where I instead wrote DefinitionObserver. But the code still worked.

So while the DefinitionObserver doesn't trigger the events it's supposed to, it triggers all of DefinitionsObserver's events.

Example code:


class TestDefinitionsObserver < Sketchup;;DefinitionsObserver
	def onComponentPropertiesChanged(definitions, definition)
		puts 'DefinitionsObserver - onComponentPropertiesChanged'
	end
	
	def onComponentRemoved(definitions, definition)
		puts 'DefinitionsObserver - onComponentRemoved'
	end
	
	def onComponentAdded(definitions, definition)
		puts 'DefinitionsObserver - onComponentAdded'
	end
end

class TestDefinitionObserver < Sketchup;;DefinitionObserver
	def onComponentPropertiesChanged(definitions, definition)
		puts 'DefinitionObserver - onComponentPropertiesChanged'
	end
	
	def onComponentRemoved(definitions, definition)
		puts 'DefinitionObserver - onComponentRemoved'
	end
	
	def onComponentAdded(definitions, definition)
		puts 'DefinitionObserver - onComponentAdded'
	end
end

module TestDefOb
	def self.test
		r = Sketchup.active_model.definitions.add_observer(TestDefinitionObserver.new)
		puts 'Sketchup;;DefinitionObserver - ' + r.to_s
		
		r = Sketchup.active_model.definitions.add_observer(TestDefinitionsObserver.new)
		puts 'Sketchup;;DefinitionsObserver - ' + r.to_s
	end
end

Type TestDefOb.test in the console and add/remove some component definitions. Notice how both observers trigger.