/// <summary>
/// Modify a property mapping in place.
/// </summary>
/// <typeparam name="TVirtualView">The cross-platform type.</typeparam>
/// <typeparam name="TViewHandler">The handler type.</typeparam>
/// <param name="propertyMapper">The property mapper in which to change the mapping.</param>
/// <param name="key">The name of the property.</param>
/// <param name="method">The modified method to call when the property is updated.</param>
public static void ModifyMapping <TVirtualView, TViewHandler>(this IPropertyMapper <TVirtualView, TViewHandler> propertyMapper,
string key, Action <TViewHandler, TVirtualView, Action <IElementHandler, IElement>?> method)
where TVirtualView : IElement where TViewHandler : IElementHandler
{
var previousMethod = propertyMapper.GetProperty(key);
void newMethod(TViewHandler handler, TVirtualView view)
{
method(handler, view, previousMethod);
}
propertyMapper.Add(key, newMethod);
}
public static void AppendToMapping <TVirtualView, TViewHandler>(this IPropertyMapper <TVirtualView, TViewHandler> propertyMapper,
string key, Action <TViewHandler, TVirtualView> method)
where TVirtualView : IElement where TViewHandler : IElementHandler
{
var previousMethod = propertyMapper.GetProperty(key);
void newMethod(TViewHandler handler, TVirtualView view)
{
previousMethod?.Invoke(handler, view);
method(handler, view);
}
propertyMapper.Add(key, newMethod);
}
