public static IBinding BindValue <TModel>(
this BooleanElement view,
TModel model,
Expression <Func <TModel, bool> > getVal)
where TModel : INotifyPropertyChanged
{
var binding = BindingCore.CreateBinding(
view,
model,
getVal,
(v, value) => BindingIos.Apply(
() =>
{
if (v.Value != value)
{
v.Value = value;
}
}));
var prop = (PropertyInfo)((MemberExpression)getVal.Body).Member;
EventHandler viewOnValueChanged = (sender, args) =>
{
if (!Equals(view.Value, prop.GetValue(model)))
{
prop.SetValue(model, view.Value);
}
};
view.ValueChanged += viewOnValueChanged;
return(binding.With(() => view.ValueChanged -= viewOnValueChanged));
}
public static void Apply(this Element parent, Func <bool> operation)
{
BindingIos.Apply(
() =>
{
if (!operation())
{
return;
}
var rootElement = HasParentElement <RootElement>(parent);
if (rootElement != null)
{
try
{
rootElement.Reload(parent, UITableViewRowAnimation.Fade);
}
catch (Exception ex)
{
// For unexplainable reasons, this tends to in rare occasions throw an exception, despite RootElement being present... :/
// If someone would look into this, that would be great!
}
}
});
}
