public async Task Show(View relative, string text, TimeSpan?duration = null)
{
_ = relative ?? throw new ArgumentNullException(nameof(relative));
if (text.IsEmpty())
{
return;
}
Content.Text(text);
duration ??= 1500.Milliseconds();
UIWorkBatch.RunSync(() =>
{
X.BindTo(relative.Width, Width, (rw, w) => (relative.CalculateAbsoluteX() + (rw / 2)) - (w / 2));
Y.BindTo(relative.Height, rh => relative.CalculateAbsoluteY() + rh);
});
this.Visible();
CancellationSource?.Cancel();
CancellationSource?.Dispose();
CancellationSource = new();
await Task.Delay(duration.Value, CancellationSource.Token)
.ContinueWith((_) => this.Hide(), CancellationSource.Token);
}
async Task None()
{
if (ToView == ParentView)
{
return;
}
await UIWorkBatch.Run(() => ParentView.Add(ToView, awaitNative: true));
}
static void HandleNavigationAnimationStarted(NavigationEventArgs args)
{
if (Tabs == null) return;
if (args.From is PopUp || args.To is PopUp) return;
var showTabs = args.To is NavBarTabsPage<TTabs>;
var shouldFadeIn = showTabs && !(args.From is NavBarTabsPage<TTabs>);
var shouldFadeOut = args.From is NavBarTabsPage<TTabs> && !showTabs;
if (shouldFadeIn) AnimateTabsIn();
else if (shouldFadeOut) AnimateTabsOut();
else UIWorkBatch.RunSync(() => Tabs?.Visible(showTabs).Opacity(showTabs ? 1 : 0));
}
internal static void Disappear(bool animate = false)
{
if (animate)
{
var ani = Animation.Create(Current, Animation.DefaultDuration, AnimationEasing.Linear, change: x => x.Opacity(0))
.OnCompleted(() =>
{
Current.Hide();
Current.SendToBack();
});
Current.Animate(ani).RunInParallel();
}
else
{
UIWorkBatch.RunSync(() => Current.Hide().Opacity(0));
Current.SendToBack();
}
}
internal static void Appear(bool animate = false)
{
if (Current.Parent == null)
{
return;
}
Current.BringToFront();
if (animate)
{
Current.Animate(Animation.DefaultDuration, AnimationEasing.Linear,
x => x.Visible().Opacity(0),
x => x.Opacity(1))
.RunInParallel();
}
else
{
UIWorkBatch.RunSync(() => Current.Visible().Opacity(1));
}
}
