/// <summary>
///
/// </summary>
/// <returns>how much receivers received the event</returns>
public int Post(TContext ctx)
{
var receivers = ListPool <EventReceiver> .Request();
receivers.AddRange(_receivers);
var receviersToBeRemove = SetPool <int> .Request();
try{
var postIndex = 0;
while (postIndex < receivers.Count)
{
var receiver = receivers[postIndex];
receiver.action(ctx);
postIndex++;
if (receiver.type == CallbackType.Once)
{
receviersToBeRemove.Add(receiver.uniqueId);
}
}
return(receivers.Count);
}finally{
ListPool <EventReceiver> .Release(receivers);
this.RemoveReceivers(receviersToBeRemove);
SetPool <int> .Release(receviersToBeRemove);
}
}
private void UpdateViews()
{
var turnToVisibleItems = SetPool <int> .Request();
try{
if (_viewportDirty)
{
InternalDebug("calculate item views visible");
if (_visibleItems == null)
{
_visibleItems = SetPool <int> .Request();
}
var newVisibleItems = SetPool <int> .Request();
this.layoutCalculator.GetOverlapsInViewport(_viewportRect, newVisibleItems);
var oldVisibleItems = _visibleItems;
try{
foreach (var index in oldVisibleItems)
{
if (!newVisibleItems.Contains(index))
{
//change to invisible
OnItemVisibleChanged(index, false);
}
}
foreach (var index in newVisibleItems)
{
if (!oldVisibleItems.Contains(index))
{
//change to visible
OnItemVisibleChanged(index, true);
turnToVisibleItems.Add(index);
}
}
}finally{
_visibleItems = newVisibleItems;
SetPool <int> .Release(oldVisibleItems);
}
}
if (_itemsDirty)
{
foreach (var index in _visibleItems)
{
OnItemUpdate(index);
}
}
else
{
foreach (var index in turnToVisibleItems)
{
OnItemUpdate(index);
}
}
if (_layoutDirty)
{
InternalDebug("calculate item views layout");
foreach (var index in _visibleItems)
{
OnItemLayout(index);
}
}
else
{
foreach (var index in turnToVisibleItems)
{
OnItemLayout(index);
}
}
}finally{
_viewportDirty = false;
_itemsDirty = false;
_layoutDirty = false;
SetPool <int> .Release(turnToVisibleItems);
}
}