Timeline: Control over the drop event

[gulench]

The current implementation of drag-and-drop in the Timeline component does not provide a way for an application to inspect and make use of the context of the drop event. I'm looking for an option to specify how to handle drop events, through which one would be able to do the following:

1. Inspect properties of target (item/group) of the drop, and time of the drop.
2. Make use of the target properties, and the dragged item, to populate the properties of the item to be added.
3. Use the above information and decide whether to accept or reject the drop event. Based on the outcome, one would have the opportunity to update the dragged item.

[yotamberk]

@gulench did you try using the onAdd event? This contains everything you asked for.
There might be a place for an onDrop event, but does this satisfy your needs?

[gulench]

@yotamberk, onAdd gets you to inspect the item, not the "point"/"target" where the item is added/dropped. In addition to the item, I would be interested in the following:

• time in the timeline where the item is added/dropped
• target group, if any
• target item, if any