public virtual void Update(ChatMessagesViewElement.UpdateModes updateMode)
{
if (this.IsUpdateSuspended)
{
this.suspendedUpdates |= updateMode;
}
else
{
if ((updateMode & ChatMessagesViewElement.UpdateModes.InvalidateMeasure) == ChatMessagesViewElement.UpdateModes.InvalidateMeasure)
{
this.InvalidateMeasure(true);
}
if ((updateMode & ChatMessagesViewElement.UpdateModes.UpdateLayout) == ChatMessagesViewElement.UpdateModes.UpdateLayout)
{
this.UpdateLayout();
}
if ((updateMode & ChatMessagesViewElement.UpdateModes.UpdateScroll) == ChatMessagesViewElement.UpdateModes.UpdateScroll)
{
this.Scroller.UpdateScrollRange();
}
if ((updateMode & ChatMessagesViewElement.UpdateModes.Invalidate) != ChatMessagesViewElement.UpdateModes.Invalidate)
{
return;
}
this.ViewElement.Invalidate();
}
}
public virtual void EndUpdate(bool update)
{
this.isUpdateSuspended = false;
if (update)
{
this.Update(this.suspendedUpdates);
this.suspendedUpdates = ChatMessagesViewElement.UpdateModes.InvalidateItems;
}
if (!this.scrollToBottomAfterEndUpdate)
{
return;
}
this.VScrollBar.Value = this.VScrollBar.Maximum - this.VScrollBar.LargeChange + 1;
}
