/// <summary>
/// Creates a new state which is based on current state and has given value for given property.
/// </summary>
/// <typeparam name="PropertyType">Type of value represented by property.</typeparam>
/// <param name="property">Property which value will be set.</param>
/// <param name="value">Value which will be set to the property.</param>
/// <returns>The new dialog state.</returns>
private DialogState newStateWithValue <PropertyType>(StateProperty <PropertyType> property, PropertyType value)
{
var propertyToValueCopy = new Dictionary <object, object>(_propertyToValue);
property.SetValue(propertyToValueCopy, value);
return(new DialogState(propertyToValueCopy));
}
/// <summary>
/// Initialize given property reference with new property of given name.
/// </summary>
/// <typeparam name="PropertyType">Type of value represented by property.</typeparam>
/// <param name="property">Initialized property.</param>
/// <param name="propertyName">Name of initialized property.</param>
private static void initialize <PropertyType>(ref StateProperty <PropertyType> property, string propertyName)
{
if (property != null)
{
throw new NotSupportedException("Cannot initialize same property twice");
}
property = new StateProperty <PropertyType>(propertyName);
}
/// <summary>
/// Gets value that is stored by given property.
/// </summary>
/// <typeparam name="PropertyType">Type of value represented by property.</typeparam>
/// <param name="property">Property which value is requested.</param>
/// <returns>Value of the property if available <c>default</c> otherwise.</returns>
private PropertyType getValue <PropertyType>(StateProperty <PropertyType> property)
{
return(property.GetValue(_propertyToValue));
}
