Callback function that needs to be called by the AttributeHandler
or ExtraAttributeHandler when it places a resource (like an
image or video) in the attribute table that is loaded asynchronously.
The callback must be called when the resource has been loaded such that
the placement of the attribute window can be adjusted if necessary.
Callback function that needs to be called by the AttributeHandler or ExtraAttributeHandler when it places a resource (like an image or video) in the attribute table that is loaded asynchronously. The callback must be called when the resource has been loaded such that the placement of the attribute window can be adjusted if necessary.