public void FlexLayoutRecognizesVisibilityChange()
{
var root = new Grid();
var flexLayout = new FlexLayout() as IFlexLayout;
var view = new TestLabel();
var view2 = new TestLabel();
root.Add(flexLayout);
flexLayout.Add(view as IView);
flexLayout.Add(view2 as IView);
var manager = new FlexLayoutManager(flexLayout);
// Measure and arrange the layout while the first view is visible
var measure = manager.Measure(1000, 1000);
manager.ArrangeChildren(new Rect(Point.Zero, measure));
// Keep track of where the second view is arranged
var whenVisible = view2.Frame.X;
// Change the visibility
view.IsVisible = false;
// Measure and arrange againg
measure = manager.Measure(1000, 1000);
manager.ArrangeChildren(new Rect(Point.Zero, measure));
var whenInvisible = view2.Frame.X;
// The location of the second view should have changed
// now that the first view is not visible
Assert.True(whenInvisible != whenVisible);
}
public void FlexLayoutMeasuresImagesUnconstrained()
{
var root = new Grid();
var flexLayout = new FlexLayout() as IFlexLayout;
var image = new TestImage();
root.Add(flexLayout);
flexLayout.Add(image as IView);
var manager = new FlexLayoutManager(flexLayout);
_ = manager.Measure(1000, 1000);
Assert.True(image.Passed, "Image should be measured unconstrained even if the FlexLayout is constrained.");
}