Stack Insertion, Removal, Group Movement

[nelsonni]

Cards must be able to be selected, dragged, and dropped onto other cards to form stacks. Selecting the visible area of a single card in the stack and dragging away from the stack should allow that card to be removed from this grouping. When in a stack, the stack of cards should be draggable when selecting any of the visible portions of the top header of the cards.

Design sketch (for reference):

[nelsonni]

Since individual cards can be dragged out to remove from a stack, but the stack is also draggable as a group, there exists an interaction behavior collision. To resolve this, the following behaviors should be included in the resolution of this issue:

• Selecting anywhere on the cards and dragging should result in the stack of cards being dragged.
• Selecting the top header bar of any single card should result in just that card being dragged (and possibly removed from the stack, if it dragged away from the stack).

The design rationale follows that the primary dragging interaction with a stack is likely to be the entire stack, and therefore should have the largest draggable selection area. And inversely, dragging individual cards is a secondary interaction and therefore should have a more specific targeted draggable selection area (i.e. the top header bar of an individual card).

[nelsonni]

Resolved by PR #9 .