public async Task PushModalAsync(Page modal, bool animated)
{
CurrentPageController?.SendDisappearing();
UpdateAccessibilityImportance(CurrentPage, ImportantForAccessibility.NoHideDescendants, false);
_navModel.PushModal(modal);
Task presentModal = PresentModal(modal, animated);
await presentModal;
UpdateAccessibilityImportance(modal, ImportantForAccessibility.Auto, true);
// Verify that the modal is still on the stack
if (_navModel.CurrentPage == modal)
{
((IPageController)modal).SendAppearing();
}
}
public Task <Page> PopModalAsync(bool animated)
{
Page modal = _navModel.PopModal();
((IPageController)modal).SendDisappearing();
var source = new TaskCompletionSource <Page>();
var modalRenderer = modal.Handler as INativeViewHandler;
if (modalRenderer != null)
{
ModalContainer?modalContainer = modalRenderer.NativeView?.Parent as ModalContainer ??
throw new InvalidOperationException("Parent is not Modal Container");
if (animated)
{
modalContainer
.Animate()?.TranslationY(_renderer.Height)?
.SetInterpolator(new AccelerateInterpolator(1))?.SetDuration(300)?.SetListener(new GenericAnimatorListener
{
OnEnd = a =>
{
modalContainer.RemoveFromParent();
modalContainer.Dispose();
source.TrySetResult(modal);
CurrentPageController?.SendAppearing();
modalContainer = null;
}
});
}
else
{
modalContainer.RemoveFromParent();
modalContainer.Dispose();
source.TrySetResult(modal);
CurrentPageController?.SendAppearing();
}
}
UpdateAccessibilityImportance(CurrentPage, ImportantForAccessibility.Auto, true);
return(source.Task);
}
async Task INavigation.PushModalAsync(Page modal, bool animated)
{
CurrentPageController?.SendDisappearing();
_navModel.PushModal(modal);
modal.Platform = this;
await PresentModal(modal, animated);
// Verify that the modal is still on the stack
if (_navModel.CurrentPage == modal)
{
((IPageController)modal).SendAppearing();
}
_toolbarTracker.Target = _navModel.Roots.Last();
UpdateActionBar();
}
Task <Page> INavigation.PopModalAsync(bool animated)
{
Page modal = _navModel.PopModal();
((IPageController)modal).SendDisappearing();
var source = new TaskCompletionSource <Page>();
IVisualElementRenderer modalRenderer = GetRenderer(modal);
if (modalRenderer != null)
{
if (animated)
{
modalRenderer.ViewGroup.Animate().Alpha(0).ScaleX(0.8f).ScaleY(0.8f).SetDuration(250).SetListener(new GenericAnimatorListener
{
OnEnd = a =>
{
modalRenderer.ViewGroup.RemoveFromParent();
modalRenderer.Dispose();
source.TrySetResult(modal);
CurrentPageController?.SendAppearing();
}
});
}
else
{
modalRenderer.ViewGroup.RemoveFromParent();
modalRenderer.Dispose();
source.TrySetResult(modal);
CurrentPageController?.SendAppearing();
}
}
_toolbarTracker.Target = _navModel.Roots.Last();
UpdateActionBar();
return(source.Task);
}