public void Should_remove_child_of_stacklayout_by_using_its_xenwidget()
{
var child = new Entry {
Placeholder = "text"
};
var layout = new StackLayout();
layout.Children.Add(child);
var page = new ContentPage {
Content = layout
};
var mgr = new XamarinDesignSurfaceManager();
mgr.SetDesignSurface(page);
var childPair = mgr[child.Id.ToString()];
var layoutPair = mgr[layout.Id.ToString()];
Assert.IsNotEmpty(layoutPair.XenWidget.Children, "The stacklayouts xenwidget should have children.");
var removed = mgr.Remove(childPair.XenWidget);
Assert.IsTrue(removed, "Removed wasn't true.");
Assert.IsEmpty(layout.Children, "The stacklayout has children.");
Assert.IsEmpty(layoutPair.XenWidget.Children, "The stacklayout has children.");
}
public void Removing_root_xenwidget()
{
var page = new ContentPage();
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
Assert.Throws <InvalidOperationException>(() => mgr.Remove(root));
}
public void Should_remove_only_design_surface_child_by_using_its_xenwidget()
{
var label = new Label {
Text = "value"
};
var page = new ContentPage {
Content = label
};
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
var labelPair = mgr[label.Id.ToString()];
var removed = mgr.Remove(labelPair.XenWidget);
Assert.IsTrue(removed, "Removed wasn't true.");
Assert.IsEmpty(mgr.Root.Children, "mgr.Root.Children should be empty.");
Assert.IsEmpty(root.Children, "root.Children should be empty.");
Assert.IsNull(page.Content, "Page content should be null.");
}