The OnPropertyPreChange property of the SerializedObject class is a delegate that is invoked before a property of the serialized object is changed. This allows for custom logic to be executed prior to the modification of a property, such as validation or logging.
To use the OnPropertyPreChange property, assign a method that matches the PropertyPreChangeDelegate signature. This method will be called before any property change occurs on the serialized object.
// Example of using OnPropertyPreChange
SerializedObject mySerializedObject = new SerializedObject();
// Define a method that matches the PropertyPreChangeDelegate signature
void BeforePropertyChange(SerializedProperty property)
{
// Custom logic before the property changes
if (property.Name == "SomeProperty")
{
// Perform validation or logging
Console.WriteLine($"Property {property.Name} is about to change.");
}
}
// Assign the method to the OnPropertyPreChange delegate
mySerializedObject.OnPropertyPreChange += BeforePropertyChange;
// Now, whenever a property is about to change, BeforePropertyChange will be invoked.