private void EnableDroppable(bool enable) {
var el = jQuery.FromElement(GetElement());
if (enable) {
el.Droppable(new DroppableOptions { Tolerance = "pointer",
Greedy = true,
OnOver = (_1, _2) => {
itemHeight = (invisibleRoot.children.Count > 0 ? jQuery.FromElement(GetNodeElement(invisibleRoot.children[0]).Children[0]).GetOuterHeight() : 1);
currentDropTarget = null;
jQuery.Document.MouseMove(dragFeedbackHandler);
},
OnOut = (_1, _2) => DragEnded(),
OnDrop = Element_Drop });
}
else
((DroppableObject)el).Destroy();
}
private void ChangeDropTarget(TreeDropTarget newTarget) {
if ((newTarget == null && currentDropTarget == null) || (newTarget != null && currentDropTarget != null && newTarget.node == currentDropTarget.node && newTarget.above == currentDropTarget.above))
return;
if (currentDropTarget != null)
jQuery.FromElement(GetNodeElement(currentDropTarget.node).Children[0]).RemoveClass(DropIntoClass).RemoveClass(DropAboveClass);
if (newTarget != null)
jQuery.FromElement(GetNodeElement(newTarget.node).Children[0]).AddClass(newTarget.above ? DropAboveClass : DropIntoClass);
currentDropTarget = newTarget;
}