private ToastView GetNextMessage()
{
ToastView message = null;
if (!DiscardRepeated)
{
return(messageBarQueue.Dequeue());
}
// Removes all except the last message.
while (messageBarQueue.Count > 0)
{
message = messageBarQueue.Dequeue();
if (!IsEqualLastMessage(message))
{
break;
}
message = null;
}
lastMessage = message;
return(message);
}
private void DismissMessage(ToastView messageView, bool dismissedByTap)
{
if (messageView == null || messageView.Hit)
{
return;
}
messageView.Hit = true;
UIView.Animate(
DismissAnimationDuration,
() => {
messageView.Frame = new CGRect(
messageView.Frame.X,
initialPosition,
messageView.Frame.Width,
messageView.Frame.Height);
},
() => {
MessageVisible = false;
messageView.RemoveFromSuperview();
InvokeDismissEvent(messageView, dismissedByTap);
if (messageBarQueue.Count > 0)
{
ShowNextMessage();
}
else
{
lastMessage = null;
}
});
}
private void MessageTapped(UIGestureRecognizer recognizer)
{
ToastView view = recognizer.View as ToastView;
if (view != null)
{
DismissMessage(view, true);
}
}
public override bool Equals(object obj)
{
if (!(obj is ToastView))
{
return(false);
}
ToastView messageView = (ToastView)obj;
return(Message == messageView.Description);
}
private static void InvokeDismissEvent(ToastView messageView, bool dismissedByTap)
{
if (!dismissedByTap)
{
messageView.OnDismiss?.Invoke();
}
else
{
messageView.OnTapped?.Invoke();
}
}
private void DismissMessage(object messageView)
{
ToastView view = messageView as ToastView;
if (view == null)
{
return;
}
InvokeOnMainThread(() => DismissMessage(view, false));
}
public void HideAll()
{
var subviews = MessageWindowView.Subviews;
foreach (UIView subview in subviews)
{
ToastView view = subview as ToastView;
view?.RemoveFromSuperview();
}
MessageVisible = false;
messageBarQueue.Clear();
CancelPreviousPerformRequest(this);
}
private void ShowNextMessage()
{
ToastView messageView = GetNextMessage();
if (messageView != null)
{
MessageVisible = true;
if (ShowAtTheBottom)
{
initialPosition = MessageWindowView.Bounds.Height + messageView.Height;
showPosition = MessageWindowView.Bounds.Height - messageView.Height;
}
else
{
initialPosition = MessageWindowView.Bounds.Y - messageView.Height;
showPosition = MessageWindowView.Bounds.Y + MessageBarOffset;
}
messageView.Frame = new CGRect(0, initialPosition, messageView.Width, messageView.Height);
messageView.Hidden = false;
messageView.SetNeedsDisplay();
var gest = new UITapGestureRecognizer(MessageTapped);
messageView.AddGestureRecognizer(gest);
UIView.Animate(
DismissAnimationDuration,
() => messageView.Frame = new CGRect(
messageView.Frame.X,
showPosition,
messageView.Width,
messageView.Height));
// Need a better way of dissmissing the method
var dismiss = new Timer(
DismissMessage,
messageView,
messageView.Duration,
TimeSpan.FromMilliseconds(-1));
}
}
public void ShowMessage(
string message,
TimeSpan?duration = null,
Action onTapped = null,
Action onDismiss = null)
{
var messageView = new ToastView(message)
{
OnTapped = onTapped,
OnDismiss = onDismiss,
Hidden = true,
Duration = duration ?? TimeSpan.FromSeconds(2.5)
};
MessageWindowView.AddSubview(messageView);
MessageWindowView.BringSubviewToFront(messageView);
messageBarQueue.Enqueue(messageView);
if (!MessageVisible)
{
ShowNextMessage();
}
}
private bool IsEqualLastMessage(ToastView message)
{
return(message.Equals(lastMessage));
}