/// <inheritdoc/>
public void OnLayout()
{
// Swap onNextLayoutDelayed with an empty list before invoking actions in onNextLayout or
// onNextLayoutDelayed. This is to avoid possible infinite loops and other problems if an
// invoked action should add new actions to onNextLayoutDelayed.
var applyTargeted = onNextLayoutDelayed;
onNextLayoutDelayed = onNextLayoutDelayedSwapTarget;
onNextLayoutDelayedSwapTarget = applyTargeted;
#if DEV_MODE && PI_ASSERTATIONS
Debug.Assert(onNextLayoutDelayed.Count == 0);
#endif
if (onNextLayout != null)
{
#if DEV_MODE && DEBUG_ON_NEXT_LAYOUT_DETAILED
Debug.Log("Applying OnNextLayout Action: " + StringUtils.ToString(onNextLayout));
#endif
// Copy onNextLayout to method-level variable and set it to null
// before invoking the action. This is to avoid possible infinite loops
// and other problems if an invoked action should add new actions to onNextLayout.
//var apply = onNextLayout;
//onNextLayout = null;
//apply();
var invocationList = onNextLayout.GetInvocationList();
onNextLayout = null;
Exception exception = null;
for (int n = 0, count = invocationList.Length; n < count; n++)
{
try
{
var invoke = invocationList[n] as Action;
invoke();
}
catch (Exception e)
{
#if DEV_MODE
if (!ExitGUIUtility.IsExitGUIException(exception))
{
Debug.LogError(e);
}
#endif
exception = e;
}
}
if (exception != null && ExitGUIUtility.ShouldRethrowException(exception))
{
throw exception;
}
}
int applyTargetedCount = applyTargeted.Count;
if (applyTargetedCount > 0)
{
for (int n = 0; n < applyTargetedCount; n++)
{
var apply = applyTargeted.Dequeue();
#if DEV_MODE && DEBUG_ON_NEXT_LAYOUT_DETAILED
Debug.Log("Applying OnNextLayout DelayedAction: " + StringUtils.ToString(apply));
#endif
// Only invoke targeted action if target drawers instance still exist.
apply.InvokeIfInstanceReferenceIsValid();
}
#if DEV_MODE && PI_ASSERTATIONS
Debug.Assert(applyTargeted.Count == 0);
#endif
}
if (keyHeldDown != KeyCode.None)
{
GUI.changed = true;
if (Platform.Time > sendNextHoldEventAt)
{
sendNextHoldEventAt = Platform.Time + KeyHoldSendEventInterval;
OnKeyDown(Event.KeyboardEvent(keyHeldDownName));
}
}
}
