// removes the individual change handler
// from a passed object.
public void RemoveOnPropertyChangedHandler
(
ObjectType obj,
OnPropertyChangedDelegate <ObjectType, PropertyType> propChangedHandler
)
{
APropertyValueWrapper <ObjectType, PropertyType> valueWrapper =
GetValueWrapper(obj, true);
valueWrapper.OnPropertyChangedEvent -= propChangedHandler;
}
// Constructor - takes default value,
// and two callbacks as arguments.
// the first callback fires before a property is changed on an object
// the second - after
// Provides default values for all its arguments
public AProp
(
PropertyType defaultValue = default(PropertyType),
BeforePropertyChangedDelegate <ObjectType, PropertyType> beforePropertyChangedFn = null,
OnPropertyChangedDelegate <ObjectType, PropertyType> onPropertyChangedFn = null
)
{
_defaultValue = defaultValue;
BeforePropertyChangedFn = beforePropertyChangedFn;
OnPropertyChangedFn = onPropertyChangedFn;
}
// adds an individual property change handler
// on the passed object. (other object won't get affected)
public void AddOnPropertyChangedHandler
(
ObjectType obj,
OnPropertyChangedDelegate <ObjectType, PropertyType> propChangedHandler
)
{
if (propChangedHandler == null)
{
return;
}
APropertyValueWrapper <ObjectType, PropertyType> valueWrapper =
GetValueWrapper(obj, true);
valueWrapper.OnPropertyChangedEvent += propChangedHandler;
}