Re: "layer.remove_object() doesn't apply to connection points"

[Hans Breuer <hans breuer org>]

At 27.09.2013 13:13, Bao Niu wrote:
> Syndrome: If you have a "Database -- Table" on screen, and then add a
> "Standard - BezierLine" connecting to one of the table's connection point,
> you cannot use python's API to disconnect this two objects
> programmatically.
To me this sounds like a bug in your code. Isn't it that you just don't 
know how to achieve this?
> When using layer.remove(BezierLine),
Apparently you are assuming layer.remove() is also deleting the object, 
which it is not. Object destruction is triggered by the object's destroy() 
method, it includes breaking the remaining object connections. A weak spot 
is, that it's in the resposibility of the API user to not access the object 
after destruction.
> and then
> update_connections(table), the connection is still there
Are you expecting a display update from update_connections()?
> The only way you
> can disconnect the two is manually delete the BezierLine from the screen.
> There is no way to do this programmatically.
In all you described so far you did not try to disconnect at all. You are 
just assuming that removing an object (from a layer) should also get rid of 
the connection. If you really want to disconnect there is 
Handle.connect(None) to do this. But of course that would not delete the 
object, but just break the connection.

> This seems to be a bug. Is there any solution?
As I said, I think the bug is in your code/assumptions. If you want help 
debugging actually providing a minimal, but complete example for the issue 
you have would be helpful.

-------- Hans "at" Breuer "dot" Org -----------
Tell me what you need, and I'll tell you how to
get along without it.                -- Dilbert