public TwoWayBinding(BindPoint source, InvertibleArrow <T1, T2> arrow, BindPoint destination)
: base(source, arrow, destination)
{
this.reverseArrow = arrow.Invert();
SubscribeToBindable(destination.Object);
}
public static BindingHandle CreateBinding <A, B>(BindPoint source, Arrow <A, B> arrow, BindPoint destination)
{
/*
* Creates a one-to-one binding from a source, an arrow and a destination. Infers
* whether it should be bidirectional from the type of the supplied arrow.
*/
if (LinkWouldCauseConflict(source, destination))
{
throw new BindingConflictException();
}
Binding <A, B> result;
if (arrow is InvertibleArrow <A, B> )
{
result = new TwoWayBinding <A, B>(source, (InvertibleArrow <A, B>)arrow, destination);
UpdateBindingGraphBothWays(source, destination);
}
else
{
result = new Binding <A, B>(source, arrow, destination);
UpdateBindingGraph(source, destination);
}
BindingHandle handle = new BindingHandle(result);
bindings.Add(handle, result);
return(handle);
}
public static BindingHandle CreateBinding <A, B>(Bindable source, string sourceProperty, Arrow <A, B> arrow, Bindable destination, string destinationProperty)
{
BindPoint sourcePoint = new BindPoint(source, sourceProperty);
BindPoint destinationPoint = new BindPoint(destination, destinationProperty);
return(CreateBinding(sourcePoint, arrow, destinationPoint));
}
//public Binding(Bindable source, string sourceVar, Bindable dest, string destVar)
public Binding(BindPoint source, Arrow <T1, T2> arrow, BindPoint dest)
{
this.source = source;
this.destination = dest;
this.arrow = arrow;
SubscribeToBindable(source.Object);
}
public static bool LinkWouldCauseConflict(BindPoint a, BindPoint b)
{
BindingGraph tempGraph = bindGraph.Copy();
tempGraph.Add(a);
tempGraph.Add(b);
tempGraph.Bind(a, b);
return(tempGraph.HasConflict());
}
private static dynamic GetValue(BindPoint point)
{
/*
* Gets the value associated with a BindPoint
* (This greatly simplifies the mess of calling Object.GetVariable<dynamic> everywhere)
*/
return(point.Object.GetVariable <dynamic>(point.Var));
}
public void TrySetVariable <T>(BindPoint bindPoint, T newValue)
{
try
{
bindPoint.Object.LockAndSetVariable(bindPoint.Var, newValue);
}
catch (VariableLockedException)
{
// Nothing to do here
}
}
private bool BindPointInList(BindPoint bindPoint, List <BindPoint> list)
{
bool isInList = false;
foreach (BindPoint point in list)
{
isInList = isInList || (bindPoint.Object.Equals(point.Object) && bindPoint.Var == point.Var);
}
return(isInList);
}
public override bool Equals(object obj)
{
if (obj is BindPoint)
{
BindPoint otherBindPoint = (BindPoint)obj;
return(ReferenceEquals(this.Object, otherBindPoint.Object) &&
this.Var == otherBindPoint.Var);
}
else
{
return(false);
}
}
public static BindingHandle CreateBinding <A, B>(BindPoint source, Arrow <A, B> arrow, BindPoint destination)
{
// TODO: Check for cycles here
Binding <A, B> result;
if (arrow is InvertibleArrow <A, B> )
{
result = new TwoWayBinding <A, B>(source, (InvertibleArrow <A, B>)arrow, destination);
}
else
{
result = new Binding <A, B>(source, arrow, destination);
}
return(new BindingHandle(result));
}
public static void UpdateBindingGraphBothWays(BindPoint a, BindPoint b)
{
UpdateBindingGraph(a, b);
UpdateBindingGraph(b, a);
}
public static void UpdateBindingGraph(BindPoint source, BindPoint destination)
{
bindGraph.AddMany(source, destination);
bindGraph.Bind(source, destination);
}