public Task RemovePageAsync(PopupPage page, bool animate = true)
{
lock (_locker)
{
if (page == null)
{
throw new NullReferenceException("Page can not be null");
}
if (!_popupStack.Contains(page))
{
throw new InvalidOperationException("The page has not been pushed yet or has been removed already");
}
if (page.DisappearingTransactionTask != null)
{
return(page.DisappearingTransactionTask);
}
var task = InvokeThreadSafe(async() =>
{
if (page.AppearingTransactionTask != null)
{
await page.AppearingTransactionTask;
}
lock (_locker)
{
if (!_popupStack.Contains(page))
{
return;
}
}
Popping?.Invoke(this, new PopupNavigationEventArgs(page, animate));
animate = CanBeAnimated(animate);
if (animate)
{
await page.DisappearingAnimation();
page.DisposingAnimation();
}
await RemoveAsync(page);
lock (_locker)
{
_popupStack.Remove(page);
page.DisappearingTransactionTask = null;
Popped?.Invoke(this, new PopupNavigationEventArgs(page, animate));
}
});
page.DisappearingTransactionTask = task;
return(task);
}
}
/// <inheritdoc/>
public Task PopAsync(bool animate = true)
{
Popping?.Invoke(this, new PopupNavigationEventArgs(_stack.Peek(), animate));
var poppedPage = _stack.Pop();
Popped?.Invoke(this, new PopupNavigationEventArgs(poppedPage, animate));
return(Task.CompletedTask);
}