public PropertyTester(Lifetime lifetime, PropertyProvider propertyProvider)
{
_propertyProvider = propertyProvider;
_propertyProvider.SomeIntProperty.BeforeChange.Advise(lifetime, args =>
{
if (args.New < 0)
{
args.Cancel = true;
}
});
_propertyProvider.SomeIntProperty.Change.Advise_HasNew(lifetime,
val => MessageBox.ShowInfo($"New property value is {val.New}"));
}
public PropertyViewModel(Lifetime lifetime)
{
// SomeIntProperty of the PropertyProvider instance is updated via the SomeIntProperty of PropertyViewModel
// which, in turn, is updated from PropertyView via WPF binding
SomeIntProperty = new Property <int>(lifetime, "PropertyViewModel.SomeIntProperty")
{
Value = 0
};
var propProvider = new PropertyProvider(lifetime);
SomeIntProperty.FlowInto(lifetime, propProvider.SomeIntProperty);
var propTester = new PropertyTester(lifetime, propProvider);
// IProperty FlowChangesInto example
SourceProperty = new Property <string>(lifetime, "PropertyViewModel.SourceProperty");
TargetProperty = new Property <string>(lifetime, "PropertyViewModel.TargetProperty");
var propFlow = new PropertyFlow(lifetime);
SourceProperty.FlowInto(lifetime, propFlow.SourceProperty);
propFlow.TargetProperty.FlowInto(lifetime, TargetProperty);
}
