void updateDrag(Offset globalPosition)
{
this._lastOffset = globalPosition - this.dragStartPoint;
this._entry.markNeedsBuild();
HitTestResult result = new HitTestResult();
WidgetsBinding.instance.hitTest(result, globalPosition + this.feedbackOffset);
List <_DragTargetState <T> > targets = this._getDragTargets(result.path.ToList());
bool listsMatch = false;
if (targets.Count >= this._enteredTargets.Count && this._enteredTargets.isNotEmpty())
{
listsMatch = true;
List <_DragTargetState <T> > .Enumerator iterator = targets.GetEnumerator();
for (int i = 0; i < this._enteredTargets.Count; i++)
{
iterator.MoveNext();
if (iterator.Current != this._enteredTargets[i])
{
listsMatch = false;
break;
}
}
}
if (listsMatch)
{
return;
}
this._leaveAllEntered();
_DragTargetState <T> newTarget = null;
foreach (var target in targets)
{
this._enteredTargets.Add(target);
if (target.didEnter(this))
{
newTarget = target;
break;
}
}
this._activeTarget = newTarget;
}
void finishDrag(_DragEndKind endKind, Velocity velocity = null)
{
bool wasAccepted = false;
if (endKind == _DragEndKind.dropped && this._activeTarget != null)
{
this._activeTarget.didDrop(this);
wasAccepted = true;
this._enteredTargets.Remove(this._activeTarget);
}
this._leaveAllEntered();
this._activeTarget = null;
this._entry.remove();
this._entry = null;
if (this.onDragEnd != null)
{
this.onDragEnd(velocity == null ? Velocity.zero : velocity, this._lastOffset, wasAccepted);
}
}
