/// <summary>
/// Sets the backing field for a direct avalonia property, raising the
/// <see cref="PropertyChanged"/> event if the value has changed.
/// </summary>
/// <typeparam name="T">The type of the property.</typeparam>
/// <param name="property">The property.</param>
/// <param name="field">The backing field.</param>
/// <param name="value">The value.</param>
/// <returns>
/// True if the value changed, otherwise false.
/// </returns>
protected bool SetAndRaise <T>(AvaloniaProperty <T> property, ref T field, T value)
{
VerifyAccess();
if (EqualityComparer <T> .Default.Equals(field, value))
{
return(false);
}
DeferredSetter <T> setter = Values.GetDirectDeferredSetter(property);
return(setter.SetAndNotify(this, property, ref field, value));
}
private DeferredSetter<T> GetDeferredSetter<T>(AvaloniaProperty property)
{
if (_deferredSetters.TryGetValue(property, out var deferredSetter))
{
return (DeferredSetter<T>)deferredSetter;
}
var newDeferredSetter = new DeferredSetter<T>();
_deferredSetters.AddValue(property, newDeferredSetter);
return newDeferredSetter;
}
