* Cache a list of eligible drop controllers, sorted by relative DOM positions
* of their respective drop targets. Called at the beginning of each drag operation,
* or whenever drop target eligibility has changed while dragging.
*
* @param boundaryPanel boundary area for drop target eligibility considerations
* @param context the current drag context
"""
def resetCache(self, boundaryPanel, context):
ArrayList list = ArrayList()
if context.draggable is not None:
WidgetArea boundaryArea = WidgetArea(boundaryPanel, None)
for Iterator iterator = dropControllerList.iterator(); iterator.hasNext();:
DropController dropController = (DropController) iterator.next()
Candidate candidate = Candidate(dropController)
if DOMUtil.isOrContains(context.draggable.getElement(),
candidate.getDropTarget().getElement())) {
continue
if candidate.getTargetArea().intersects(boundaryArea):
list.add(candidate)
sortedCandidates = (Candidate[]) list.toArray(Candidate[list.size()])
Arrays.sort(sortedCandidates)
