private void OnIsLoopingEnabledChanged()
{
if (this.owner == null)
{
return;
}
this.StopOffsetAnimation(false);
if (this.items.Count == 0)
{
return;
}
if (!this.isLoopingEnabled)
{
this.UpdateWheel(0, false);
for (int i = 0; i < this.items.Count; i++)
{
LoopingListItem item = this.items[i];
if (i >= this.logicalCount)
{
item.SetIsEmpty(true);
}
}
var offset = -this.owner.SelectedIndex * this.itemLength;
if (this.isCentered)
{
offset += this.GetSnapOffsetWhenCentered();
}
this.UpdateWheel(offset, false);
}
else
{
foreach (LoopingListItem item in this.items)
{
item.SetIsEmpty(false);
}
this.InvalidateMeasure();
this.UpdateWheel(this.visualOffset, true);
}
this.owner.UpdateSelection(this.owner.SelectedIndex, this.owner.GetVisualIndex(this.owner.SelectedIndex), LoopingListSelectionChangeReason.Private);
}
private void OnIsLoopingEnabledChanged()
{
if (this.owner == null)
{
return;
}
this.StopOffsetAnimation(false);
if (this.items.Count == 0)
{
return;
}
if (!this.isLoopingEnabled)
{
double normalizedOffset = this.visualOffset % (this.logicalCount * this.itemLength);
normalizedOffset = normalizedOffset > 0 ? normalizedOffset - (this.itemLength * this.logicalCount) : normalizedOffset;
normalizedOffset = this.ClampOffset(normalizedOffset);
this.UpdateWheel(0, false);
for (int i = 0; i < this.items.Count; i++)
{
LoopingListItem item = this.items[i];
if (i > this.logicalCount - 1)
{
item.SetIsEmpty(true);
}
}
this.UpdateWheel(normalizedOffset, false);
}
else
{
foreach (LoopingListItem item in this.items)
{
item.SetIsEmpty(false);
}
}
this.UpdateWheel(this.visualOffset, true);
}
private void CreateVisualItems()
{
int oldCount = this.visualCount;
this.UpdateVisualItemCount();
if (this.visualCount == 0 || this.visualCount == oldCount && this.items.Count >= this.visualCount)
{
return;
}
if (this.visualCount != oldCount || this.items.Count < this.visualCount)
{
this.Children.Clear();
this.visualIndexChain.Clear();
this.items.Clear();
}
for (int i = 0; i < this.visualCount; i++)
{
LoopingListItem item = this.CreateVisualItem();
this.Children.Add(item);
this.visualIndexChain.Add(i);
if (!this.isLoopingEnabled && i > this.logicalCount - 1)
{
item.SetIsEmpty(true);
}
}
if (this.topLogicalIndex == 0 || this.visualCount != oldCount)
{
this.UpdateIndexes(this.visualCount != oldCount, false);
}
else
{
this.BringIntoView(this.topLogicalIndex, this.visualIndexChain[0]);
}
}
