Multiple Drag Boxes

[crmorford]

Requests include being able to close out a drag box:

Also, being able to redrag just one corner/adjust the box instead of starting over.

[jtlan]

See #1572 for the Component that should be responsible for producing the visual effects here.

Should the Component automatically hook up the appropriate event listeners?

[aicioara]

From a related issue

Create a Component that draws selection boxes. This Component will replace the box-drawing behavior that is currently tightly coupled with Interaction.Dragbox.

It should support these features:

• Ability to draw multiple boxes
• Ability to resize boxes (horizontally, vertically, or both)
• Ability to dismiss boxes (maybe by clicking an X in the corner?)
• Ability to query bounds of the boxes (either at creation or modification, or on command)

Consult Design on appropriate appearance, behavior, etc.

[aicioara]

@dbt What is the status of this idea?

[jtlan]

Going to split this into multiple issues.

[jtlan]

Movable boxes here: #365