public static DumbBinding SetBinding(DumbBindingTarget target, BindingBase bindingToSource)
{
lock (instances)
{
if (target == null)
{
throw new ArgumentNullException("target");
}
DumbBinding result = new DumbBinding(bindingToSource, target);
ClearBinding(target);
object targetObject = target.TargetObject;
if (targetObject == null)
{
throw new ArgumentException("target.TargetObject is no longer alive.", "target");
}
KeyValuePair <int, int> key = new KeyValuePair <int, int>(target.GetHashCode(), targetObject.GetHashCode());
if (instances.ContainsKey(key))
{
instances[key].Add(result);
}
else
{
instances.Add(key, new List <DumbBinding>()
{
result
});
}
return(result);
}
}
public static DumbBinding GetBinding(DumbBindingTarget target)
{
lock (instances)
{
if (target == null)
{
throw new ArgumentNullException("target");
}
object targetObject = target.TargetObject;
if (targetObject == null)
{
throw new ArgumentException("target.TargetObject is no longer alive.", "target");
}
KeyValuePair <int, int> key = new KeyValuePair <int, int>(target.GetHashCode(), targetObject.GetHashCode());
if (instances.ContainsKey(key))
{
return(instances[key].FirstOrDefault(binding => object.Equals(binding.Target, target)));
}
else
{
return(null);
}
}
}
public static void ClearBinding(DumbBindingTarget target)
{
if (target == null)
{
throw new ArgumentNullException("target");
}
object targetObject = target.TargetObject;
if (targetObject == null)
{
throw new ArgumentException("target.TargetObject is no longer alive.", "target");
}
lock (instances)
{
KeyValuePair <int, int> key = new KeyValuePair <int, int>(target.GetHashCode(), targetObject.GetHashCode());
if (instances.ContainsKey(key))
{
var list = instances[key];
for (int i = list.Count - 1; i >= 0; i--)
{
DumbBinding binding = list[i];
if (object.Equals(target, binding.Target) || binding.Target.TargetObject == null)
{
binding.Clear();
list.RemoveAt(i);
}
}
if (list.Count == 0)
{
instances.Remove(key);
}
}
}
}
