public void ValidateBindableProperties()
{
var layout = new StackLayout
{
IsPlatformEnabled = true,
};
// EmptyView
object emptyView = new object();
BindableLayout.SetEmptyView(layout, emptyView);
Assert.AreEqual(emptyView, BindableLayout.GetEmptyView(layout));
Assert.AreEqual(emptyView, layout.GetValue(BindableLayout.EmptyViewProperty));
// EmptyViewTemplateProperty
DataTemplate emptyViewTemplate = new DataTemplate(typeof(Label));
BindableLayout.SetEmptyViewTemplate(layout, emptyViewTemplate);
Assert.AreEqual(emptyViewTemplate, BindableLayout.GetEmptyViewTemplate(layout));
Assert.AreEqual(emptyViewTemplate, layout.GetValue(BindableLayout.EmptyViewTemplateProperty));
// ItemsSourceProperty
IEnumerable itemsSource = new object[0];
BindableLayout.SetItemsSource(layout, itemsSource);
Assert.AreEqual(itemsSource, BindableLayout.GetItemsSource(layout));
Assert.AreEqual(itemsSource, layout.GetValue(BindableLayout.ItemsSourceProperty));
// ItemTemplateProperty
DataTemplate itemTemplate = new DataTemplate(typeof(Label));
BindableLayout.SetItemTemplate(layout, itemTemplate);
Assert.AreEqual(itemTemplate, BindableLayout.GetItemTemplate(layout));
Assert.AreEqual(itemTemplate, layout.GetValue(BindableLayout.ItemTemplateProperty));
// ItemTemplateSelectorProperty
var itemTemplateSelector = new DataTemplateSelectorFrame();
BindableLayout.SetItemTemplateSelector(layout, itemTemplateSelector);
Assert.AreEqual(itemTemplateSelector, BindableLayout.GetItemTemplateSelector(layout));
Assert.AreEqual(itemTemplateSelector, layout.GetValue(BindableLayout.ItemTemplateSelectorProperty));
}
// Checks if for every item in the items source there's a corresponding view
static bool IsLayoutWithItemsSource(IEnumerable itemsSource, Compatibility.Layout layout)
{
if (itemsSource == null)
{
return(layout.Children.Count() == 0);
}
int i = 0;
foreach (object item in itemsSource)
{
if (BindableLayout.GetItemTemplate(layout) is DataTemplate dataTemplate ||
BindableLayout.GetItemTemplateSelector(layout) is DataTemplateSelector dataTemplateSelector)
{
if (!Equals(item, layout.Children[i].BindingContext))
{
return(false);
}
}