/// <summary>
/// Adds a live input to the zone program. A live input is an input that can be controlled while
/// the program is running and the program will respond to it in the way it's designed to.
/// </summary>
/// <param name="name">Name of the input.</param>
/// <param name="action">The action that should occur when the input is set to a certain value. This will be defined by the
/// subclasses of this class to perform certain actions when the this input is set to a certain value.</param>
/// <returns>The input that was just added.</returns>
protected ZoneProgramInput AddInput <T>(string name, Action <dynamic> action)
{
var input = new ZoneProgramInput(name, typeof(T));
Inputs.Add(input);
input.Subscribe(action);
return(input);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var result = new ZoneProgramInput();
// Deserialize into a temporary JObject
JObject obj = serializer.Deserialize <JObject>(reader);
// Populate the ZoneProgramInput object with the contents
serializer.Populate(obj.CreateReader(), result);
// Overwrite the "Value" property with the correct value based on the
// "Type" property.
result.SetValue(obj.GetValue("value", StringComparison.OrdinalIgnoreCase)
.ToObject(result.Type, serializer));
return(result);
}
/// <summary>
/// Adds a live input as a direct map to a member of the subclass. This essentially extends a property in
/// the subclass as an input, which can be set to any value by the user.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="instance"></param>
/// <param name="propertyName"></param>
/// <param name="filterPredicate">The incoming value will be run through this filter predicate function and only set the value if the function returns true.</param>
/// <returns></returns>
protected ZoneProgramInput AddMappedInput <T>(object instance, string propertyName, Func <T, bool> filterPredicate = null)
{
var propertyInfo = instance.GetType().GetProperty(propertyName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
var input = new ZoneProgramInput(propertyInfo.Name, propertyInfo.PropertyType);
Inputs.Add(input);
if (filterPredicate != null)
{
input.Subscribe(incomingValue =>
{
if (filterPredicate(ConvertIncomingValue <T>(incomingValue)))
{
propertyInfo.SetValue(instance, incomingValue);
}
else
{
throw new WarningException("Incoming value out of range of valid input values.");
}
});
}
else
{
input.Subscribe(incomingValue =>
{
if (propertyInfo.CanWrite)
{
propertyInfo.SetValue(instance, ConvertIncomingValue <T>(incomingValue));
}
else
{
throw new InvalidOperationException(
$"Input {input.Name} has an underlying property without an accessible setter. Cannot set value for this property.");
}
});
}
//set value of input to the value of the property
input.SetValue(propertyInfo.GetValue(instance));
return(input);
}
